C11111333133313232233133313331333133313231312111133131121211113313311232221   >>    C1111133313331323223313331333133313331323131211113313112121111331331123222   <<    C11111333133313232233133313331333133313231312111133131121211113313311232223   >>      C11111333133313232233133313331333133313231312111133131121211113313311232222   >>