C312322331333132212111133133313331333133312121111331333123313233231121   >>    C31232233133313221211113313331333133313331212111133133312331323323112   <<    C312322331333132212111133133313331333133312121111331333123313233231123   >>      C312322331333132212111133133313331333133312121111331333123313233231122   >>