-ic b-u bbb bbc bbd bbe bbf bbi bbk bbl bbu bcb bcc bcd bce bcf bci bck bcl bcu bdb bdc bdd bde bdf bdi bdk bdl bdu be- beb bec bed bee bef bei bek bel beu bfb bfc bfd bfe bff bfi bfl bfu bi- bib bic bid bie bif bii bik bil biu bkb bkc bke bkf bkk bkl blb blc bld ble blf bli blk bll blu bub buc bud bue buf bui buk bul buu c-- cbb cbc cbd cbe cbf cbi cbk cbl cbu ccb ccc ccd cce ccf cci cck ccl ccu cdb cdc cdd cde cdf cdi cdk cdl cdu ce- ceb cec ced cee cef cei cek cel ceu cfb cfc cfd cfe cff cfi cfk cfl cfu ci- cib cic cid cie cif cii cik cil ciu ckb ckc ckd cki cl- clb clc cld cle clf cli clk cll clu cub cuc cud cue cuf cui cuk cul cuu dbb dbc dbd dbe dbf dbi dbk dbl dbu dcb dcc dcd dce dcf dci dck dcl dcu ddb ddc ddd dde ddf ddi ddk ddl ddu de- deb dec ded dee def dei dek del deu dfb dfc dfd dfe dff dfi dfk dfl dfu di- dib dic did die dif dii dik dil diu dkb dkc dke dki dkk dkl dku dl- dlb dlc dld dle dlf dli dlk dll dlu dub duc dud due duf dui duk dul ebb ebc ebd ebe ebf ebi ebk ebl ebu ec- ecb ecc ecd ece ecf eci eck ecl ecu ed- edb edc edd ede edf edi edk edl edu eeb eec eed eee eef eek eel ef- efb efc efd efe eff efi efl eib eic eid eie eif eii eik eil eiu ekb ekc ekd eke ekf eki ekl eku elb elc eld ele elf eli elk ell elu eu- eub euc eud eue euf eui eul fbb fbc fbd fbe fbf fbi fbk fbl fbu fcb fcc fcd fce fcf fci fck fcl fcu fdb fdc fdd fde fdf fdi fdk fdl fdu feb fec fed fee fef fei fek fel feu ffc ffd ffe fff ffi ffk ffl ffu fib fic fid fie fif fii fik fil fiu fkb fkc fkf fki fkk fkl flb flc fld fle flf fli fll flu fub fud fue fuf fui fuk ful fuu i-d i-f ibb ibc ibd ibe ibf ibi ibk ibl ibu icb icc icd ice icf ici ick icl icu idb idc idd ide idf idi idk idl idu ie- iec ied iee ief iei iek iel ifb ifc ifd ife iff ifi ifl ifu iib iic iid iie iif iii iil iiu ikb ikc ike ikf iki ikk ikl iku il- ilb ilc ild ile ilf ili ilk ill ilu iu- iub iuc iud iue iui kbb kbc kbd kbe kbf kbi kbk kbl kbu kcb kcc kcd kce kci kck kcl kcu kdb kdc kde kdf kdk kdl kdu ke- keb kec ked kee kef kei kek kel kfc kfd kff kfi kfu kib kic kid kie kif kii kik kil kiu kkb kkc kke kki kkk kkl kku kl- klb klc kld klf kli klu kub kuc kud kue kui kuk kul kuu lbb lbc lbd lbe lbf lbi lbk lbl lbu lcb lcc lcd lce lcf lci lck lcl lcu ldb ldc ldd lde ldf ldi ldk ldl ldu leb lec led lee lef lei lek lel leu lfb lfc lfd lfe lff lfi lfk lfl lfu lib lic lid lie lif lii lik lil liu lkb lkl llb llc lld lle llf lli llk lll llu lub luc lud lue luf lui luk lul luu ubb ubc ube ubf ubi ubk ubl ubu ucb ucc ucd uce ucf uci uck ucl ucu udb udc udd ude udf udi udk udl udu ueb uec ued uee uef uei uel ufc ufd ufe uff ufi ufl ufu uib uic uid uie uif uii uil uiu ukb ukc uke ukf uki ukk ukl uku ulb ulc uld ule ulf uli ulk ull ulu uuc uue uuu