C31231211111133131211113313331323133313331311233133313331323223223311   >>    C3123121111113313121111331333132313331333131123313331333132322322331   <<    C31231211111133131211113313331323133313331311233133313331323223223313   >>      C31231211111133131211113313331323133313331311233133313331323223223312   >>