C1111121111331311211331333133313331323131133133313231333132321121   >>    C111112111133131121133133313331333132313113313331323133313232112   <<    C1111121111331311211331333133313331323131133133313231333132321123   >>      C1111121111331311211331333133313331323131133133313231333132321122   >>