-ic b-u bbb bbc bbe bbi bbk bbo bbu bcb bcc bce bci bck bco bcu bcv be- beb bec bee bei bek beo beu bev bi- bib bic bie bii bik bio biu biv bkb bkc bke bkk bko bkv bob boc boe boi bok boo bou bov bub buc bue bui buk buo buu bvb bvc bve bvi bvk bvo bvu bvv c-- cbb cbc cbe cbi cbk cbo cbu cbv ccb ccc cce cci cck cco ccu ccv ce- ceb cec cee cei cek ceo ceu cev ci- cib cic cie cii cik cio ciu civ ckb ckc cki cko co- cob coc coe coi cok coo cou cov cub cuc cue cui cuk cuo cuu cuv cvb cvc cve cvi cvk cvo cvu cvv ebb ebc ebe ebi ebk ebo ebu ebv ec- ecb ecc ece eci eck eco ecu ecv eeb eec eee eek eeo eev eib eic eie eii eik eio eiu eiv ekb ekc eke eki eko eku ekv eo- eob eoc eoe eoi eok eoo eou eu- eub euc eue eui euv evb evc eve evi evo evv i-v ibb ibc ibe ibi ibk ibo ibu ibv icb icc ice ici ick ico icu icv ie- iec iee iei iek iev iib iic iie iii iio iiu ikb ikc ike iki ikk iko iku ikv io- iob ioc ioe ioi ioo iou iov iu- iub iuc iue iui ivb ivc ive ivi ivo ivu ivv kbb kbc kbe kbi kbk kbo kbu kcb kcc kce kci kck kcu ke- keb kec kee kei kek keo kev kib kic kie kii kik kio kiu kiv kkb kkc kke kki kkk kku kkv kob koc koe koi kok koo kou kub kuc kue kui kuk kuu kvb kvi kvk kvo kvv o-i ob- obb obc obe obi obk obo obu obv oc- ocb occ oci ock oco ocu ocv oeb oec oee oei oeo oib oic oie oii oik oio oiu oiv okb okc oke oki okk oko oku oo- oob ooc ooi ook ooo oov ou- ouc oue oui ouk ouo ov- ovb ovc ove ovi ovo ovv ubb ubc ube ubi ubk ubo ubu ubv ucb ucc uce uci uck uco ucu ucv ueb uec uee uei uib uic uie uii uio uiu ukb ukc uke uki ukk uku uob uoc uoe uok uoo uuc uue uuu uvb uvc uve uvo uvu uvv v-e vbc vbi vbk vbo vbv vcc vce vci vco vcu veb vec vee vei vek veo veu vi- vib vic vie vii vik vio viu viv vkb vob voc voe voi vok voo vou vov vue vuk vuv vvb vvc vvi vvo vvv