C31231211111133131211113313231333133313331311121111331322331323122121   >>    C3123121111113313121111331323133313331333131112111133132233132312212   <<    C31231211111133131211113313231333133313331311121111331322331323122123   >>      C31231211111133131211113313231333133313331311121111331322331323122122   >>