d-tv dddd ddtv dfdt dfrf dfri dftr didi dif- diff diii diiv dird dirr dirt diti ditt ditv divd divi drif drit dvdr dvfr dvi- dvii dvir fdti ffff ffii ffrr fftf fidf fiff fifi fift fiii fiti fitt fr-v frid frit frvt ftdi ftii idid idir idrf idtv idvd ifid ifit ifrf ifri iiii iiit iitr iitt iri- irid irri irtf irti itif itrf itri ittf ivdr rfdi rfid ridd ridi riff rift riif riri riti ritt rrif rrrr rtdt rtvi tdff tdri tdtv tidd tiff tift tiit tird tiri tirr titi titt tivi trfd trfr tri- trif trit trtr ttff tttt tvri tvrr tvtv vidi viff viii viri virr virt viti vitt vivi vrdi vt-i vvvv