-ic b-u bbb bbc bbi bbn bbo bbr bbt bbu bcb bcc bci bcn bco bcr bct bcu bi- bib bic bii bin bio bir bit biu bnb bnc bni bnn bno bnr bnt bnu bob boc boi bon boo bor bot bou brb bri brn bro brr brt bru btb btc bti btn bto btr btt btu bub buc bui bun buo bur but buu c-- cbb cbc cbi cbn cbo cbr cbt cbu ccb ccc cci ccn cco ccr cct ccu ci- cib cic cii cin cio cir cit ciu cn- cnb cnc cni cnn cno cnr cnt cnu co- cob coc coi con coo cor cot cou crb crc cri crn cro crr crt cru ctb ctc cti ctn cto ctr ctt ctu cub cuc cui cun cuo cur cut cuu ibb ibc ibi ibn ibo ibr ibt ibu icb icc ici icn ico icr ict icu iib iic iii iin iio iir iit iiu in- inb inc ini inn ino inr int inu io- iob ioc ioi ion ioo ior iot iou ir- irb irc iri irn iro irr irt iru itb itc iti itn ito itt itu iu- iub iuc iui iur iut n-i nbb nbc nbi nbn nbo nbr nbt nbu ncb ncc nci ncn nco ncr nct ncu nib nic nii nin nio nir nit niu nnb nnc nni nnn nno nnt nnu no- nob noc noi non noo nor not nou nrb nrc nri nrn nro nrr nrt nru ntb ntc nti ntn nto ntr ntt ntu nub nuc nui nun nuo nur nut nuu o-i ob- obb obc obi obn obo obr obt obu oc- ocb occ oci ocn oco ocr oct ocu oib oic oii oin oio oir oit oiu on- onb onc oni onn ono onr ont onu oo- oob ooc ooi oon ooo oor oot or- orb orc ori orn oro orr ort oru ot- otb otc oti otn oto otr ott otu ou- ouc oui oun ouo our out rbb rbc rbi rbn rbo rbr rbt rbu rcb rcc rci rcn rco rcr rct rcu rib ric rii rin rio rir rit rnb rnc rni rnn rno rnr rnt rnu rob roc roi ron roo ror rot rou rrb rrc rri rrn rrr rrt rru rtb rtc rti rtn rto rtr rtt rtu rub ruc rui run ruo rur rut ruu tbb tbc tbi tbn tbo tbr tbt tbu tcb tcc tci tcn tco tcr tct tcu tib tic tii tin tio tir tit tiu tnb tnc tni tnn tno tnr tnt to- tob toc toi ton too tor tot tou trb trc tri trn tro trr trt tru ttb ttc tti ttn tto ttr ttt ttu tub tuc tui tun tuo tur tut tuu ubb ubc ubi ubn ubo ubr ubt ubu ucb ucc uci ucn uco ucr uct ucu uib uic uii uin uio uir uit uiu un- unb unc uni unn uno unr unt unu uob uoc uon uoo uor uot ur- urb urc uri urn uro urr urt uru utb utc uti utn uto utr utt utu uuc uun uur uut uuu