-ing dddd dfrf dfri didi dif- diff digg digi diii din- ding dini dinn dird dirr drif drin ffff ffii ffrr fidf fiff fifi figg fiii find fing fini finn firn fndd fndg fndn fndr frid frig frin gdfr gdnf ggfg gggg ggrn gidd gidi giff gigg gigi gign ging gini ginn gird girg giri girn girr gnin gnrr grid grif grig grin grni grrr idgf idid idig idin idir idrf ifid ifni ifnr ifrf ifri igni igri iiii ind- indi infi inid inig inni innr inri iri- irid irig irin irri n-ii ndfi ndrf ndri nfff ngri nidd nidi niff nigg niir nind ning nini nngn nnnn nrrd rfdi rfid ridd ridi riff rigg rigi riif riin rind rinf ring rinn riri rndf rnin rrif rrrr