C11111333133313232233133313331333133313231312111133131123311331   >>    C1111133313331323223313331333133313331323131211113313112331133   <<    C11111333133313232233133313331333133313231312111133131123311333   >>      C11111333133313232233133313331333133313231312111133131123311332   >>