C11111333133313232233133313331333133313231333133313113313133121   >>    C1111133313331323223313331333133313331323133313331311331313312   <<    C11111333133313232233133313331333133313231333133313113313133123   >>      C11111333133313232233133313331333133313231333133313113313133122   >>