C11111333133313232233133313331333131133132313311211111211111213331221   >>    C1111133313331323223313331333133313113313231331121111121111121333122   <<    C11111333133313232233133313331333131133132313311211111211111213331223   >>      C11111333133313232233133313331333131133132313311211111211111213331222   >>