C31232233133313221211113313331333132313232233133313331311211312311   >>    C3123223313331322121111331333133313231323223313331333131121131231   <<    C31232233133313221211113313331333132313232233133313331311211312313   >>      C31232233133313221211113313331333132313232233133313331311211312312   >>