C312312111111331312111133133313331333133322331323133313221321121   >>    C31231211111133131211113313331333133313332233132313331322132112   <<    C312312111111331312111133133313331333133322331323133313221321123   >>      C312312111111331312111133133313331333133322331323133313221321122   >>