C313212111113331323312111133133313331333133313331333133313331331123223313231221   >>    C31321211111333132331211113313331333133313331333133313331333133112322331323122   <<    C313212111113331323312111133133313331333133313331333133313331331123223313231223   >>      C313212111113331323312111133133313331333133313331333133313331331123223313231222   >>