C312322331333132212111133133313331333133312121111121111123133313112331322121   >>    C31232233133313221211113313331333133313331212111112111112313331311233132212   <<    C312322331333132212111133133313331333133312121111121111123133313112331322123   >>      C312322331333132212111133133313331333133312121111121111123133313112331322122   >>