C11111333133313232233133313331333133313231313131211113313221321   >>    C1111133313331323223313331333133313331323131313121111331322132   <<    C11111333133313232233133313331333133313231313131211113313221323   >>      C11111333133313232233133313331333133313231313131211113313221322   >>