C11112331312111112111133132313331333133313232212111113331333131323131221   >>    C1111233131211111211113313231333133313331323221211111333133313132313122   <<    C11112331312111112111133132313331333133313232212111113331333131323131223   >>      C11112331312111112111133132313331333133313232212111113331333131323131222   >>