-ic b-u bbb bbc bbf bbi bbn bbo bbs bbt bbu bcb bcc bcf bci bcn bco bcs bct bcu bfb bfc bff bfi bfn bfo bfs bft bfu bi- bib bic bif bii bin bio bis bit biu bnb bnc bnf bni bnn bno bns bnt bnu bob boc bof boi bon boo bos bot bou bsb bsc bsf bsi bsn bso bss bst bsu btb btc btf bti btn bto bts btt btu bub buc buf bui bun buo bus but buu c-- cbb cbc cbf cbi cbn cbo cbs cbt cbu ccb ccc ccf cci ccn cco ccs cct ccu cfb cfc cff cfi cfn cfo cfs cft cfu ci- cib cic cif cii cin cio cis cit ciu cn- cnb cnc cnf cni cnn cno cns cnt cnu co- cob coc cof coi con coo cos cot cou csb csc csf csi csn cso css cst csu ctb ctc ctf cti ctn cto cts ctt ctu cub cuc cuf cui cun cuo cus cut cuu fbb fbc fbf fbi fbn fbo fbs fbt fbu fcb fcc fcf fci fcn fco fcs fct fcu ffc fff ffi ffn ffo ffs fft ffu fib fic fif fii fin fis fit fiu fnb fnc fnf fni fnn fns fnt fnu fob foc fof foi fon foo fos fot fou fsb fsc fsf fsi fsn fso fss fst fsu ftb ftc ftf fti ftn fto fts ftt ftu fub fuf fui fun fuo fus fut fuu i-f ibb ibc ibf ibi ibn ibo ibs ibt ibu icb icc icf ici icn ico ics ict icu ifb ifc iff ifi ifn ifo ifs ift ifu iib iic iif iii iin iio iis iit iiu in- inb inc inf ini inn ino ins int inu io- iob ioc iof ioi ion ioo ios iot iou is- isb isc isf isi isn iso iss ist isu itb itc itf iti itn ito its itt itu iu- iub iuc iui ius iut n-i nbb nbc nbf nbi nbn nbo nbs nbt nbu ncb ncc ncf nci ncn nco ncs nct ncu nfb nfc nff nfi nfn nfo nfs nft nfu nib nic nif nii nin nio nis nit niu nnb nnc nnf nni nnn nno nns nnt nnu no- nob noc nof noi non noo nos not nou nsb nsc nsf nsi nsn nso nss nst nsu ntb ntc ntf nti ntn nto nts ntt ntu nub nuc nui nun nuo nus nut nuu o-i ob- obb obc obf obi obn obo obs obt obu oc- ocb occ ocf oci ocn oco ocs oct ocu of- ofb ofc off ofi ofn ofo ofs oft ofu oib oic oif oii oin oio ois oit oiu on- onb onc onf oni onn ono ons ont onu oo- oob ooc oof ooi oon ooo oos oot os- osb osc osf osi osn oso oss ost osu ot- otb otc otf oti otn oto ots ott otu ou- ouc ouf oui oun ouo ous out sbb sbc sbf sbi sbn sbo sbs sbt sbu scb scc scf sci scn sco scs sct scu sfb sfc sff sfi sfn sfo sfs sft sfu sib sic sif sii sin sio sis sit siu snb snc snf sni snn sno sns snt snu sob soc sof soi son soo sos sot sou ss- ssb ssc ssf ssi ssn sso sss sst ssu stb stc stf sti stn sto sts stt stu sub suc suf sui sun suo sus sut suu tbb tbc tbf tbi tbn tbo tbs tbt tbu tcb tcc tcf tci tcn tco tcs tct tcu tfb tfc tff tfi tfn tfo tfs tft tfu tib tic tif tii tin tio tis tit tiu tnb tnc tnf tni tnn tno tns tnt to- tob toc tof toi ton too tos tot tou tsb tsc tsf tsi tsn tso tss tst tsu ttb ttc ttf tti ttn tto tts ttt ttu tub tuc tuf tui tun tuo tus tut tuu ubb ubc ubf ubi ubn ubo ubs ubt ubu ucb ucc ucf uci ucn uco ucs uct ucu ufc uff ufi ufn ufo ufs uft ufu uib uic uif uii uin uio uis uit uiu un- unb unc unf uni unn uno uns unt unu uob uoc uon uoo uos uot usb usc usf usi usn uso uss ust usu utb utc utf uti utn uto uts utt utu uuc uun uus uut uuu