C11111333133313232233133313331333133313231312111133132213232221   >>    C1111133313331323223313331333133313331323131211113313221323222   <<    C11111333133313232233133313331333133313231312111133132213232223   >>      C11111333133313232233133313331333133313231312111133132213232222   >>