C31232233133313221211113313331333132313232233133313332313231311   >>    C3123223313331322121111331333133313231323223313331333231323131   <<    C31232233133313221211113313331333132313232233133313332313231313   >>      C31232233133313221211113313331333132313232233133313332313231312   >>