d-ix dddd ddry dhpr didi didy diii dipp dird dirr dixi dixy diyi dphp dpph dppx dpyd drih drip drix dry- dxdr dxii dxip dxix dxpy dxrd dxrp dxrr dxrx dxxr dxxx dxyr dydd dyhh dyhp dyhr dyph dyr- dyri dyrx dyxr dyxx dyxy dyyr h-ii hdri hdyd hhhh hhip hidi hidy hihi hipp hird hiri hpdh hrid hrip hrpp hydd hydr hyp- hyph hypy hyrd idid idir ihdr ihrd iiii ipdi iphr ipid ipix ippr ippy ipri irdp iri- irid irip irix iriy irri ixxi pdpr phi- phip phrr pidx piip pipi pipp pipy piri pirr piry pixx pixy pphi ppid ppih pppd pppp pri- prid prii prix prpd prrd prri pypy pyr- pyri pyry rhyd ridd ridi ridx ripd ripi ripp ripr riri rixy rpdp rpii rpix rrrr rydy ryip xhhp xhri xidi xiii xiph xixi xxii xxix xxxi xxxx xxxy xyr- yhid yhyd yidi yird yirr ypir yyyy