C31231211111133131211113313331323133313331311233132233112323221   >>    C3123121111113313121111331333132313331333131123313223311232322   <<    C31231211111133131211113313331323133313331311233132233112323223   >>      C31231211111133131211113313331323133313331311233132233112323222   >>