iiii iiit iitr iitt init inni innr inp- inpi inpp inpt inri inti intn intp intr ipin ipix ippr ipri iri- irin irip irix irri irti irtp itin itri ixxi n-ii niip niir niit nini nipr nipt nirt niti nitr nixi nixt nnit nnnn nnpi nnpr nntn npin npri nprt nptn nrpn nttr piip pini pinn pinp pint pipi pipp piri pirn pirr piti pitr pitt pitx pixx pnin pnpp pntr pnxt pppn pppp pptn pptt pri- prii prin prix prnp prri prti prtp prtr riin rinn ripi ripp ripr ript riri riti ritt rnin rnnt rntp rpii rpix rppn rptn rrrr rttp tiit tini tinn tint tip- tipi tipp tipt tiri tirr titi titp titt tixt tpir tppp tppr tptp tptr tri- trin trip trit trix trpn trpp trtr tttt txii txtr xiii xixi xpin xxii xxix xxxi xxxx