1	1	contig	\N	3	default_version,sequence_level
2	1	scaffold	GRCm38	2	default_version
3	1	chromosome	GRCm38	1	default_version
11	1	chromosome	NCBIM37	4	
12	1	supercontig	NCBIM37	5	
111	1	chromosome	NCBIM36	6	
