iiii inni innr innu inp- inpi inpp inri inui inun inup ipin ippr ipri ipur iri- irin irip irri irun iuiu iupp n-ii n-up niip niir niiu nini nipr niru niur nnnn nnpi nnpr npin npri nrpn nuin nunn nuri nurn nurp nurr nuru piip pini pinn pinp pinu pipi pipp piri pirn pirr piru pnin pnpp pnup pppn pppp ppru ppur pri- prii prin prnp prri pruu puin puir puiu punu pupi pupu pur- puri purp purr puru riin rinn ripi ripp ripr riri rnin rpii rppn rrrr rrun ruin runi runn rupp ruri rurp ruru ruun u-rp uipi uirr uni- unii unin unir unni upin upnp uppp uppu upri upup urin uriu urni urri urun urup urur uuni uuri uuuu