# ucsc	ensembl
chrI	groupI
chrII	groupII
chrIII	groupIII
chrIV	groupIV
chrIX	groupIX
chrM	MT
chrV	groupV
chrVI	groupVI
chrVII	groupVII
chrVIII	groupVIII
chrX	groupX
chrXI	groupXI
chrXII	groupXII
chrXIII	groupXIII
chrXIV	groupXIV
chrXIX	groupXIX
chrXV	groupXV
chrXVI	groupXVI
chrXVII	groupXVII
chrXVIII	groupXVIII
chrXX	groupXX
chrXXI	groupXXI