C111113331333132322331333133313331311331323133112121111113313231333231221   >>    C11111333133313232233133313331333131133132313311212111111331323133323122   <<    C111113331333132322331333133313331311331323133112121111113313231333231223   >>      C111113331333132322331333133313331311331323133112121111113313231333231222   >>