C11111333133313232233133313331333133313231312111133132213232213233211331   >>    C1111133313331323223313331333133313331323131211113313221323221323321133   <<    C11111333133313232233133313331333133313231312111133132213232213233211333   >>      C11111333133313232233133313331333133313231312111133132213232213233211332   >>