C31232233133313221211113313331333132313232233133313331311132313231   >>    C3123223313331322121111331333133313231323223313331333131113231323   <<    C31232233133313221211113313331333132313232233133313331311132313233   >>      C31232233133313221211113313331333132313232233133313331311132313232   >>