C313212111113331323312111133133313331333133313331333133313231333112121   >>    C31321211111333132331211113313331333133313331333133313331323133311212   <<    C313212111113331323312111133133313331333133313331333133313231333112123   >>      C313212111113331323312111133133313331333133313331333133313231333112122   >>