b-p bbb bbi bbk bbn bbo bbp bbt bi- bib bii bik bin bio bip bit bkb bkk bkn bko bkp bkt bnb bni bnk bnn bno bnp bnt bob boi bok bon boo bop bot bpb bpi bpn bpo bpp bpt btb bti btk btn bto btp btt ibb ibi ibk ibn ibo ibp ibt iib iii iin iio iip iit ikb iki ikk iko ikt in- inb ini ink inn ino inp int io- iob ioi ion ioo iop iot ipb ipi ipn ipo ipp ipt itb iti itk itn ito itp itt k-t kbb kbi kbk kbn kbo kbp kib kii kik kin kio kip kit kkb kki kkk kkn kkp kkt kn- kni knk knn kno knp knt kob koi kok kon koo kop kot kpi kpk kpn kpo kpp kpt ktb ktk ktn kto ktp ktt n-i nbb nbi nbk nbn nbo nbp nbt nib nii nik nin nio nip nit nki nkk nkn nko nkp nkt nnb nni nnk nnn nno nnp nnt no- nob noi nok non noo nop not npb npi npn npo npp npt ntb nti ntk ntn nto ntp ntt o-i ob- obb obi obk obn obo obp obt oib oii oik oin oio oip oit okb oki okk oko okp on- onb oni onk onn ono onp ont oo- oob ooi ook oon ooo oop oot op- opb opi opk opn opo opp opt ot- otb oti otk otn oto otp ott p-p pbb pbi pbk pbn pbo pbp pbt pib pii pik pin pio pip pit pkb pki pkn pko pkp pkt pn- pnb pni pnk pnn pno pnp pnt pob poi pok pon poo pop pot ppb ppi ppk ppn ppo ppp ppt pt- ptb pti ptk ptn pto ptp ptt tbb tbi tbk tbn tbo tbp tbt tib tii tik tin tio tip tit tkb tkk tko tkp tkt tnb tni tnk tnn tno tnp tnt to- tob toi tok ton too top tot tpb tpi tpk tpn tpo tpp tpt ttb tti ttk ttn tto ttp ttt