n-up nnnn nnpr nntn nprt nptn nrpn ntnu ntru nttr nunn nunt nurn nurp nurr nurt nuru nutt nutu pnpp pntr pnup pppn pppp ppru pptn pptt ppur prnp prtp prtr prut pruu punt punu pupu pur- purp purr puru put- putt putu rnnt rntp rnut rppn rptn rrrr rrun rttp runn runt rupp rupt rurp ruru rutt rutu ruun tnut tppp tppr tptp tptr tput trpn trpp trtr trun trut truu tttt tunn tunu tupu turn turp turr turt turu tutt tutu u-rp unut upnp uppp uppu upup urun urup urur urut uttu uuuu