C31231211111133131211113313331323133313331311233132322331322221   >>    C3123121111113313121111331333132313331333131123313232233132222   <<    C31231211111133131211113313331323133313331311233132322331322223   >>      C31231211111133131211113313331323133313331311233132322331322222   >>