C11111333133313232233133313331333133313231312111133131133113313111211   >>    C1111133313331323223313331333133313331323131211113313113311331311121   <<    C11111333133313232233133313331333133313231312111133131133113313111213   >>      C11111333133313232233133313331333133313231312111133131133113313111212   >>