C313212111113331323312111133133313331333133313331333133313231333232211   >>    C31321211111333132331211113313331333133313331333133313331323133323221   <<    C313212111113331323312111133133313331333133313331333133313231333232213   >>      C313212111113331323312111133133313331333133313331333133313231333232212   >>