C1111133313331323223313331333133313113313121111132311211331312121   >>    C111113331333132322331333133313331311331312111113231121133131212   <<    C1111133313331323223313331333133313113313121111132311211331312123   >>      C1111133313331323223313331333133313113313121111132311211331312122   >>