C312312111111331312111133133313231333133313112331333132212323221232322321   >>    C31231211111133131211113313331323133313331311233133313221232322123232232   <<    C312312111111331312111133133313231333133313112331333132212323221232322323   >>      C312312111111331312111133133313231333133313112331333132212323221232322322   >>