-ic b-u bbb bbc bbi bbn bbo bbr bbt bbu bbx bcb bcc bci bcn bco bcr bct bcu bcx bi- bib bic bii bin bio bir bit biu bix bnb bnc bni bnn bno bnr bnt bnu bnx bob boc boi bon boo bor bot bou box brb bri brn bro brr brt bru brx btb btc bti btn bto btr btt btu btx bub buc bui bun buo bur but buu bux bxb bxi bxn bxo bxx c-- cbb cbc cbi cbn cbo cbr cbt cbu cbx ccb ccc cci ccn cco ccr cct ccu ccx ci- cib cic cii cin cio cir cit ciu cix cn- cnb cnc cni cnn cno cnr cnt cnu cnx co- cob coc coi con coo cor cot cou cox crb crc cri crn cro crr crt cru crx ctb ctc cti ctn cto ctr ctt ctu ctx cub cuc cui cun cuo cur cut cuu cxc cxi cxo cxr cxt cxx ibb ibc ibi ibn ibo ibr ibt ibu ibx icb icc ici icn ico icr ict icu iib iic iii iin iio iir iit iiu iix in- inb inc ini inn ino inr int inu inx io- iob ioc ioi ion ioo ior iot iou ir- irb irc iri irn iro irr irt iru irx itb itc iti itn ito itt itu itx iu- iub iuc iui iur iut ixc ixi ixn n-i nbb nbc nbi nbn nbo nbr nbt nbu nbx ncb ncc nci ncn nco ncr nct ncu ncx nib nic nii nin nio nir nit niu nix nnb nnc nni nnn nno nnt nnu no- nob noc noi non noo nor not nou nox nrb nrc nri nrn nro nrr nrt nru nrx ntb ntc nti ntn nto ntr ntt ntu ntx nub nuc nui nun nuo nur nut nuu nux nxc nxt o-i ob- obb obc obi obn obo obr obt obu obx oc- ocb occ oci ocn oco ocr oct ocu ocx oib oic oii oin oio oir oit oiu on- onb onc oni onn ono onr ont onu onx oo- oob ooc ooi oon ooo oor oot oox or- orb orc ori orn oro orr ort oru orx ot- otb otc oti otn oto otr ott otu ou- ouc oui oun ouo our out ox- oxb oxc oxi oxn oxo oxt oxx rbb rbc rbi rbn rbo rbr rbt rbu rbx rcb rcc rci rcn rco rcr rct rcu rcx rib ric rii rin rio rir rit rix rnb rnc rni rnn rno rnr rnt rnu rob roc roi ron roo ror rot rou rox rrb rrc rri rrn rrr rrt rru rtb rtc rti rtn rto rtr rtt rtu rtx rub ruc rui run ruo rur rut ruu rux rxr t-x tbb tbc tbi tbn tbo tbr tbt tbu tcb tcc tci tcn tco tcr tct tcu tcx tib tic tii tin tio tir tit tiu tix tnb tnc tni tnn tno tnr tnt tnx to- tob toc toi ton too tor tot tou tox trb trc tri trn tro trr trt tru trx ttb ttc tti ttn tto ttr ttt ttu ttx tub tuc tui tun tuo tur tut tuu tux txi txn txt txu ubb ubc ubi ubn ubo ubr ubt ubu ubx 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 unx uob uoc uon uoo uor uot uox ur- urb urc uri urn uro urr urt uru urx utb utc uti utn uto utr utt utu utx uuc uun uur uut uuu uxb uxc uxo uxr uxt uxu xbc xbr xbx xcb xci xcr xcx xic xii xin xio xit xiu xix xnc xno xnu xoc xoi xon xoo xor xot xox xrc xrt xrx xtc xti xtr xtx xui xun xxi xxo xxx