-ing dddd didi didu digg digi diii din- ding dini dinn dinu dird dirr drin drug drui druu dudd dudu dugu duid duin duir dung dunn durg duri durn duru duur gggg ggrn gidd gidi gigg gigi gign ging gini ginn ginu gird girg giri girn girr giru giur gnin gnrr grid grig grin grni grrr grug grui grun grur gudi gudu gugg gugi gugu guid guin gund gung gunn gurd gurg guri gurn gurr guru idid idig idin idir idun igni ignu igri iiii ind- indi indu inid inig inni innr innu inri inui inun iri- irid irig irin irri irun iuiu n-ii ndri ngri ngur nguu nidd nidi nigg niir niiu nind ning nini niru niur nngn nnnn nrrd nudd nudi nuin nung nunn nurd nuri nurn nurr nuru ridd ridi rigg rigi rigu riin rind ring rinn riri rnin rrrr rrun rudd rudi rugg rugi ruid ruin rund rung runi runn rurd ruri ruru ruud ruun uddi udid udig udin udir udun ugni ugri ugur uguu uirr undi ungu uni- unii unin unir unni urdu urgi urgu urin uriu urni urri urun urur uuni uuri uuuu