C31231211111133131211113313231333133313231333132313331333132211222113221   >>    C3123121111113313121111331323133313331323133313231333133313221122211322   <<    C31231211111133131211113313231333133313231333132313331333132211222113223   >>      C31231211111133131211113313231333133313231333132313331333132211222113222   >>