-ic a-a a-b a-c a-i aaa aab aac aaf aah aai aan aao aar aau ab- aba abb abc abf abh abi abn abo abr abu ac- aca acb acc acf ach aci acn aco acr acu af- afa afb afc aff afh afi afn afo afr afu aha ahb ahc ahf ahh ahi ahn aho ahr ahu ai- aia aib aic aif aih aii ain aio air aiu an- ana anb anc anf anh ani ann ano anr anu aoa aob aoc aof aoh aoi aon aoo aor aou ar- ara arb arc arf arh ari arn aro arr aru au- aua aub auc auf auh aui aun auo aur b-u baa bab bac baf bah bai ban bao bar bau bba bbb bbc bbf bbh bbi bbn bbo bbr bbu bca bcb bcc bcf bch bci bcn bco bcr bcu bfa bfb bfc bff bfh bfi bfn bfo bfr bfu bha bhb bhc bhf bhh bhi bho bhr bhu bi- bia bib bic bif bih bii bin bio bir biu bna bnb bnc bnf bni bnn bno bnr bnu boa bob boc bof boh boi bon boo bor bou bra brb brf brh bri brn bro brr bru bua bub buc buf buh bui bun buo bur buu c-- caa cab cac caf cah cai can cao car cau cba cbb cbc cbf cbh cbi cbn cbo cbr cbu cca ccb ccc ccf cch cci ccn cco ccr ccu cfa cfb cfc cff cfh cfi cfn cfo cfr cfu ch- cha chb chc chf chh chi chn cho chr chu ci- cia cib cic cif cih cii cin cio cir ciu cn- cna cnb cnc cnf cnh cni cnn cno cnr cnu co- coa cob coc cof coh coi con coo cor cou cra crb crc crf crh cri crn cro crr cru cua cub cuc cuf cuh cui cun cuo cur cuu faa fab fac faf fah fai fan fao far fau fba fbb fbc fbf fbh fbi fbn fbo fbr fbu fca fcb fcc fcf fci fcn fco fcr fcu ffa ffc fff ffh ffi ffn ffo ffr ffu fha fhb fhc fhf fhh fhi fhn fho fhr fia fib fic fif fih fii fin fir fiu fna fnb fnc fnf fnh fni fnn fnr fnu foa fob foc fof foh foi fon foo for fou fra frb frc frf frh fri frn fro frr fru fua fub fuf fui fun fuo fur fuu h-i haa hab hac haf hah hai han hao har hau hba hbb hbc hbf hbh hbi hbn hbo hbr hbu hca hcb hcc hcf hch hci hcn hco hcr hfa hfb hfc hff hfh hfi hfn hfo hfr hfu hha hhb hhc hhf hhh hhi hhn hho hhr hhu hia hib hic hif hih hii hin hio hir hiu hna hnb hnc hnf hnh hnn hno hnu hoa hob hoc hof hoh hoi hon hoo hor hou hr- hra hrb hrc hrf hrh hri hrn hro hrr hru hua hub huc huf huh hui hun huo hur huu i-f ia- iaa iab iac iaf iah iai ian iao iar iau iba ibb ibc ibf ibh ibi ibn ibo ibr ibu ica icb icc icf ich ici icn ico icr icu ifa ifb ifc iff ifi ifn ifo ifr ifu iha ihb ihc ihf ihh ihi ihn iho ihr ihu iia iib iic iif iih iii iin iio iir iiu in- ina inb inc inf inh ini inn ino inr inu io- ioa iob ioc iof ioh ioi ion ioo ior iou ir- ira irb irc irf iri irn iro irr iru iu- iua iub iuc iui iur n-i naa nab nac naf nah nai nan nao nar nau nba nbb nbc nbf nbi nbn nbo nbr nbu nca ncb ncc ncf nch nci ncn nco ncr ncu nfa nfb nfc nff nfi nfn nfo nfr nfu nha nhb nhc nhf nhh nhi nhn nhr nhu nia nib nic nif nih nii nin nio nir niu nna nnb nnc nnf nnh nni nnn nno nnu no- noa nob noc nof noh noi non noo nor nou nra nrb nrc nrf nri nrn nro nrr nru nua nub nuc nuh nui nun nuo nur nuu o-i oaa oab oac oaf oah oai oan oao oar oau ob- oba obb obc obf obh obi obn obo obr obu oc- oca ocb occ ocf och oci ocn oco ocr ocu of- ofa ofb ofc off ofi ofn ofo ofr ofu oha ohc ohf ohh ohi ohn oho ohr ohu oia oib oic oif oii oin oio oir oiu on- ona onb onc onf onh oni onn ono onr onu oo- ooa oob ooc oof ooh ooi oon ooo oor or- ora orb orc orf orh ori orn oro orr oru ou- oua ouc ouf ouh oui oun ouo our ra- raa rab rac raf rah rai ran rao rar rau rba rbb rbc rbf rbh rbi rbn rbo rbr rbu rca rcb rcc rcf rch rci rcn rco rcr rcu rfa rfb rfc rff rfh rfi rfn rfo rfr rfu rh- rha rhb rhc rhf rhh rhi rhn rho rhr rhu ria rib ric rif rih rii rin rio rir rna rnb rnc rnh rni rnn rno rnr rnu roa rob roc rof roh roi ron roo ror rou rra rrb rrc rrf rrh rri rrn rrr rru rua rub ruc ruf ruh rui run ruo rur ruu ua- uaa uab uac uaf uah uai uan uao uar uau uba ubb ubc ubf ubh ubi ubn ubo ubr ubu uca ucb ucc ucf uch uci ucn uco ucr ucu ufa ufc uff ufh ufi ufn ufo ufr ufu uha uhb uhc uhf uhh uhi uho uhr uhu uia uib uic uif uii uin uio uir uiu un- una unb unc unf unh uni unn uno unr unu uoa uob uoc uon uoo uor ur- ura urb urc urf uri urn uro urr uru uua uuc uun uur uuu