C3132121111133313233121111331333133313331333133313331333132313232231221   >>    C313212111113331323312111133133313331333133313331333133313231323223122   <<    C3132121111133313233121111331333133313331333133313331333132313232231223   >>      C3132121111133313233121111331333133313331333133313331333132313232231222   >>