dddd ddry didi didy diii din- dini dinn dipn dipp dird dirr diyi dpin dpni dpyd drin drip dry- dydd dyin dyny dyr- dyri dyyr idid idin idir iiii ind- indi indy inid inni innr inny inp- inpi inpp inri ipdi ipid ipin ippr ippy ipri irdp iri- irid irin irip iriy irri iryn n-ii ndnp ndpd ndpr ndri ndry nidd nidi niip niir nind nini nipr niyi nnnn nnpi nnpr npin nppd npri nrpn nrrd nyny nypd pdpn pdpr piip pind pini pinn pinp piny pipi pipp pipy piri pirn pirr piry pnin pnpp ppid pppd pppn pppp pri- prid prii prin prnd prnp prpd prrd prri pyin pyn- pynd pypy pyr- pyri pyry ridd ridi riin rind rinn riny ripd ripi ripp ripr riri rndp rnin rpdp rpii rppn rrrr rydy ryip rynd rynn ydin ydnp yidi yird yirn yirr ypir yrin yryn yyyy