C312312111111331312111133133313231333133313112331333133322331323223213311221   >>    C31231211111133131211113313331323133313331311233133313332233132322321331122   <<    C312312111111331312111133133313231333133313112331333133322331323223213311223   >>      C312312111111331312111133133313231333133313112331333133322331323223213311222   >>