C11111333133313232233133313331333131133132313311211111211111133231231   >>    C1111133313331323223313331333133313113313231331121111121111113323123   <<    C11111333133313232233133313331333131133132313311211111211111133231233   >>      C11111333133313232233133313331333131133132313311211111211111133231232   >>