C31232233133313221211113313331333132313331322121133133313233311231311   >>    C3123223313331322121111331333133313231333132212113313331323331123131   <<    C31232233133313221211113313331333132313331322121133133313233311231313   >>      C31232233133313221211113313331333132313331322121133133313233311231312   >>