C313212111113331323312111133133313331333133313331333133313231323223313231311211   >>    C31321211111333132331211113313331333133313331333133313331323132322331323131121   <<    C313212111113331323312111133133313331333133313331333133313231323223313231311213   >>      C313212111113331323312111133133313331333133313331333133313231323223313231311212   >>