diff --git a/output/duplex.ifc.csv b/output/duplex.ifc.csv
new file mode 100644
index 0000000..15403ed
--- /dev/null
+++ b/output/duplex.ifc.csv
@@ -0,0 +1,57 @@
+1,Level 1,Basic Wall:Interior - Partition (92mm Stud):138584
+2,Level 1,Basic Wall:Party Wall - CMU Residential Unit Dimising Wall:139234
+3,Level 1,Basic Wall:Party Wall - CMU Residential Unit Dimising Wall:139347
+4,Level 1,Basic Wall:Party Wall - CMU Residential Unit Dimising Wall:139374
+5,Level 1,Basic Wall:Interior - Partition (92mm Stud):139783
+6,Level 1,Basic Wall:Interior - Partition (92mm Stud):139939
+7,T/FDN,Basic Wall:Foundation - Concrete (417mm):140479
+8,T/FDN,Basic Wall:Foundation - Concrete (417mm):140520
+9,T/FDN,Basic Wall:Foundation - Concrete (417mm):140554
+10,T/FDN,Basic Wall:Foundation - Concrete (417mm):140602
+11,T/FDN,Basic Wall:Foundation - Concrete (435mm):140913
+12,T/FDN,Basic Wall:Foundation - Concrete (435mm):140987
+13,T/FDN,Basic Wall:Foundation - Concrete (435mm):141018
+14,Level 2,Basic Wall:Party Wall - CMU Residential Unit Dimising Wall:143239
+15,Level 2,Basic Wall:Interior - Plumbing (152mm Stud):144138
+16,Level 2,Basic Wall:Interior - Partition (92mm Stud):144301
+17,Level 2,Basic Wall:Interior - Partition (92mm Stud):144684
+18,Level 2,Basic Wall:Interior - Plumbing (152mm Stud):144783
+19,Level 1,Basic Wall:Exterior - Brick on Block:138157
+20,Level 1,Basic Wall:Exterior - Brick on Block:138310
+21,Level 2,Basic Wall:Exterior - Brick on Block:143410
+22,Level 2,Basic Wall:Exterior - Brick on Block:143534
+23,Level 1,Basic Wall:Interior - Partition (92mm Stud):139682
+24,Level 1,Basic Wall:Interior - Partition (92mm Stud):139143
+25,Level 1,Basic Wall:Interior - Partition (92mm Stud):143856
+26,Level 1,Basic Wall:Interior - Partition (92mm Stud):144518
+27,Level 2,Basic Wall:Interior - Partition (92mm Stud):143960
+28,Level 2,Basic Wall:Interior - Partition (92mm Stud):144633
+29,Level 2,Basic Wall:Interior - Partition (92mm Stud):143921
+30,Level 2,Basic Wall:Interior - Partition (92mm Stud):144586
+31,Level 1,Basic Wall:Exterior - Brick on Block:138062
+32,Level 1,Basic Wall:Exterior - Brick on Block:138237
+33,Level 2,Basic Wall:Exterior - Brick on Block:143478
+34,Level 2,Basic Wall:Exterior - Brick on Block:143590
+35,Roof,Basic Wall:Exterior - Brick on Block:184944
+36,Roof,Basic Wall:Exterior - Brick on Block:185014
+37,Roof,Basic Wall:Exterior - Brick on Block:185064
+38,Roof,Basic Wall:Exterior - Brick on Block:185101
+39,Level 1,Basic Wall:Interior - Furring (152 mm Stud):189074
+40,Level 1,Basic Wall:Interior - Furring (152 mm Stud):189901
+41,Level 1,Basic Wall:Interior - Partition (92mm Stud):190140
+42,Level 1,Basic Wall:Interior - Furring (152 mm Stud):190774
+43,Level 1,Basic Wall:Interior - Furring (152 mm Stud):190933
+44,Level 2,Basic Wall:Interior - Furring (152 mm Stud):193247
+45,Level 2,Basic Wall:Interior - Furring (152 mm Stud):194166
+46,Level 2,Basic Wall:Interior - Partition (92mm Stud):203347
+47,Level 2,Basic Wall:Interior - Partition (92mm Stud):203998
+48,Level 1,Basic Wall:Interior - Partition (92mm Stud):204300
+49,Level 1,Basic Wall:Interior - Partition (92mm Stud):204493
+50,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217414
+51,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217415
+52,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217416
+53,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217417
+54,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217577
+55,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217578
+56,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217579
+57,Level 2,Basic Wall:Interior - Furring (38 mm Stud):217580
diff --git a/output/test_2024-02-04 12:29:36.053596.ifc b/output/test_2024-02-04 12:29:36.053596.ifc
new file mode 100644
index 0000000..d32698f
--- /dev/null
+++ b/output/test_2024-02-04 12:29:36.053596.ifc	
@@ -0,0 +1,44 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('ViewDefinition [CoordinationView]'),'2;1');
+FILE_NAME('','2024-02-04T12:29:36',(),(),'IfcOpenShell v0.7.0-fc50bdd3a','IfcOpenShell v0.7.0-fc50bdd3a','');
+FILE_SCHEMA(('IFC4'));
+ENDSEC;
+DATA;
+#1=IFCPROJECT('14N9UVe$z1hfzxFwzcHJDz',$,'My Project',$,$,$,$,(#10),#5);
+#2=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
+#3=IFCSIUNIT(*,.AREAUNIT.,$,.SQUARE_METRE.);
+#4=IFCSIUNIT(*,.VOLUMEUNIT.,$,.CUBIC_METRE.);
+#5=IFCUNITASSIGNMENT((#4,#2,#3));
+#6=IFCCARTESIANPOINT((0.,0.,0.));
+#7=IFCDIRECTION((0.,0.,1.));
+#8=IFCDIRECTION((1.,0.,0.));
+#9=IFCAXIS2PLACEMENT3D(#6,#7,#8);
+#10=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.E-05,#9,$);
+#11=IFCGEOMETRICREPRESENTATIONSUBCONTEXT('Body','Model',*,*,*,*,#10,$,.MODEL_VIEW.,$);
+#12=IFCSITE('1w_54CtOv2GAhvIMZq3YuR',$,'My Site',$,$,$,$,$,$,$,$,$,$,$);
+#13=IFCBUILDING('3UUzPVCkf8iP6S1wRqLIuu',$,'Building A',$,$,$,$,$,$,$,$,$);
+#14=IFCBUILDINGSTOREY('20JY2xT7b8x9vOutXamopK',$,'Ground Floor',$,$,$,$,$,$,$);
+#15=IFCRELAGGREGATES('1gAb87fyzDROEgXiz5P9lo',$,$,$,#1,(#12));
+#16=IFCRELAGGREGATES('2V$tmKZ317wQtbi4C50$ij',$,$,$,#12,(#13));
+#17=IFCRELAGGREGATES('1PqG07Nmv5owEq2Zn3WMz4',$,$,$,#13,(#14));
+#18=IFCWALL('3wGmcjF3n2YfLfxD7U3IQ_',$,$,$,$,#40,#34,$,$);
+#24=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.,710.86492033732),(3694.18792280089,710.86492033732),(3694.18792280089,0.),(0.,0.)));
+#25=IFCINDEXEDPOLYCURVE(#24,$,.F.);
+#26=IFCDIRECTION((0.,0.,1.));
+#27=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#25);
+#28=IFCCARTESIANPOINT((0.,0.,0.));
+#29=IFCDIRECTION((0.,0.,1.));
+#30=IFCDIRECTION((1.,0.,0.));
+#31=IFCAXIS2PLACEMENT3D(#28,#29,#30);
+#32=IFCEXTRUDEDAREASOLID(#27,#31,#26,8283.44525543879);
+#33=IFCSHAPEREPRESENTATION(#11,'Body','SweptSolid',(#32));
+#34=IFCPRODUCTDEFINITIONSHAPE($,$,(#33));
+#35=IFCRELCONTAINEDINSPATIALSTRUCTURE('3EHE4wTA5DXx5vqz7YDYRG',$,$,$,(#18),#14);
+#36=IFCCARTESIANPOINT((0.,0.,0.));
+#37=IFCDIRECTION((0.,0.,1.));
+#38=IFCDIRECTION((1.,0.,0.));
+#39=IFCAXIS2PLACEMENT3D(#36,#37,#38);
+#40=IFCLOCALPLACEMENT($,#39);
+ENDSEC;
+END-ISO-10303-21;