C31231211111133131211113313331323133313331311233133313223331322311   >>    C3123121111113313121111331333132313331333131123313331322333132231   <<    C31231211111133131211113313331323133313331311233133313223331322313   >>      C31231211111133131211113313331323133313331311233133313223331322312   >>