bbb bbi bbk bbn bbo bbt bi- bib bii bik bin bio bit biv bkb bkk bkn bko bkt bkv bnb bni bnk bnn bno bnt bnv bob boi bok bon boo bot bov btb bti btk btn bto btt btv bvb bvi bvk bvn bvo bvt bvv i-v ibb ibi ibk ibn ibo ibt ibv iib iii iin iio iit ikb iki ikk iko ikt ikv in- inb ini ink inn ino int inv io- iob ioi ion ioo iot iov itb iti itk itn ito itt itv ivb ivi ivo ivt ivv k-t kbb kbi kbk kbn kbo kib kii kik kin kio kit kiv kkb kki kkk kkn kkt kkv kn- kni knk knn kno knt kob koi kok kon koo kot ktb ktk ktn kto ktt ktv kvb kvi kvk kvn kvo kvv n-i nbb nbi nbk nbn nbo nbt nbv nib nii nik nin nio nit niv nki nkk nkn nko nkt nnb nni nnk nnn nno nnt nnv no- nob noi nok non noo not nov ntb nti ntk ntn nto ntt ntv nvb nvi nvk nvn nvt nvv o-i ob- obb obi obk obn obo obt obv oib oii oik oin oio oit oiv okb oki okk oko on- onb oni onk onn ono ont oo- oob ooi ook oon ooo oot oov ot- otb oti otk otn oto ott otv ov- ovb ovi ovo ovv tbb tbi tbk tbn tbo tbt tbv tib tii tik tin tio tit tiv tkb tkk tko tkt tnb tni tnk tnn tno tnt to- tob toi tok ton too tot tov ttb tti ttk ttn tto ttt ttv tvb tvi tvk tvn tvo tvt vbi vbk vbo vbv vi- vib vii vik vin vio vit viv vkb vkt vn- vni vno vnv vob voi vok von voo vot vov vtb vti vtk vto vtt vtv vvb vvi vvo vvt vvv