-er -ic -th a-a a-b a-c a-i a-t aaa aab aac aae aah aai aao aar aat aau ab- aba abb abc abe abh abi abo abr abt abu ac- aca acb acc ace ach aci aco acr act acu aea aeb aec aee aeh aei aeo aer aet aeu aha ahb ahc ahe ahh ahi aho ahr aht ahu ai- aia aib aic aie aih aii aio air ait aiu aoa aob aoc aoe aoh aoi aoo aor aot aou ar- ara arb arc are arh ari aro arr art aru at- ata atb atc ate ath ati ato atr att atu au- aua aub auc aue auh aui auo aur aut b-u baa bab bac bae bah bai bao bar bat bau bba bbb bbc bbe bbh bbi bbo bbr bbt bbu bca bcb bcc bce bch bci bco bcr bct bcu be- bea beb bec bee beh bei beo ber bet beu bha bhb bhc bhe bhh bhi bho bhr bht bhu bi- bia bib bic bie bih bii bio bir bit biu boa bob boc boe boh boi boo bor bot bou bra brb bre brh bri bro brr brt bru bta btb btc bte bth bti bto btr btt btu bua bub buc bue buh bui buo bur but buu c-- caa cab cac cae cah cai cao car cat cau cba cbb cbc cbe cbh cbi cbo cbr cbt cbu cca ccb ccc cce cch cci cco ccr cct ccu ce- cea ceb cec cee ceh cei ceo cer cet ceu ch- cha chb chc che chh chi cho chr cht chu ci- cia cib cic cie cih cii cio cir cit ciu co- coa cob coc coe coh coi coo cor cot cou cra crb crc cre crh cri cro crr crt cru cta ctb ctc cte cth cti cto ctr ctt ctu cua cub cuc cue cuh cui cuo cur cut cuu eaa eab eac eae eah eai eao ear eat eau eba ebb ebc ebe ebh ebi ebo ebr ebt ebu ec- eca ecb ecc ece ech eci eco ecr ect ecu eea eeb eec eee eeo eer eet eha ehb ehc ehe ehh ehi eho ehr eht ehu eia eib eic eie eii eio eir eit eiu eo- eoa eob eoc eoe eoh eoi eoo eor eot eou era erb erc ere erh eri ero err ert eru eta etb etc ete eth eti eto etr ett etu eu- eua eub euc eue eui eur eut h-i haa hab hac hae hah hai hao har hat hau hba hbb hbc hbe hbh hbi hbo hbr hbt hbu hca hcb hcc hce hch hci hco hcr hct he- hea heb hec hee heh hei heo her het heu hha hhb hhc hhe hhh hhi hho hhr hht hhu hia hib hic hie hih hii hio hir hit hiu hoa hob hoc hoe hoh hoi hoo hor hot hou hr- hra hrb hrc hre hrh hri hro hrr hrt hru hta htb htc hte hth hti hto htr htt hua hub huc hue huh hui huo hur hut huu ia- iaa iab iac iae iah iai iao iar iat iau iba ibb ibc ibe ibh ibi ibo ibr ibt ibu ica icb icc ice ich ici ico icr ict icu ie- iea iec iee iei ier iet iha ihb ihc ihe ihh ihi iho ihr iht ihu iia iib iic iie iih iii iio iir iit iiu io- ioa iob ioc ioe ioh ioi ioo ior iot iou ir- ira irb irc ire iri iro irr irt iru ita itb itc ite ith iti ito itt itu iu- iua iub iuc iue iui iur iut o-i oaa oab oac oae oah oai oao oar oat oau ob- oba obb obc obe obh obi obo obr obt obu oc- oca ocb occ och oci oco ocr oct ocu oea oeb oec oee oeh oei oeo oer oet oha ohc ohe ohh ohi oho ohr oht ohu oia oib oic oie oii oio oir oit oiu oo- ooa oob ooc ooh ooi ooo oor oot or- ora orb orc ore orh ori oro orr ort oru ot- ota otb otc ote oth oti oto otr ott otu ou- oua ouc oue ouh oui ouo our out ra- raa rab rac rae rah rai rao rar rat rau rba rbb rbc rbe rbh rbi rbo rbr rbt rbu rca rcb rcc rce rch rci rco rcr rct rcu re- rea reb rec ree reh rei reo rer ret reu rh- rha rhb rhc rhe rhh rhi rho rhr rht rhu ria rib ric rie rih rii rio rir rit roa rob roc roe roh roi roo ror rot rou rra rrb rrc rrh rri rrr rrt rru rta rtb rtc rte rti rto rtr rtt rtu rua rub ruc rue ruh rui ruo rur rut ruu taa tab tac tae tah tai tao tar tat tau tba tbb tbc tbe tbh tbi tbo tbr tbt tbu tca tcb tcc tce tch tci tco tcr tct tcu te- tea teb tec tee teh tei teo ter tet teu th- tha thb thc the thh thi tho thr tht thu tia tib tic tie tih tii tio tir tit tiu to- toa tob toc toe toh toi too tor tot tou tra trb trc tre trh tri tro trr trt tru tta ttb ttc tte tth tti tto ttr ttt ttu tua tub tuc tue tuh tui tuo tur tut tuu ua- uaa uab uac uae uah uai uao uar uat uau uba ubb ubc ube ubh ubi ubo ubr ubt ubu uca ucb ucc uce uch uci uco ucr uct ucu uea ueb uec uee ueh uei uer uet uha uhb uhc uhe uhh uhi uho uhr uht uhu uia uib uic uie uii uio uir uit uiu uoa uob uoc uoe uoo uor uot ur- ura urb urc ure uri uro urr urt uru uta utb utc ute uth uti uto utr utt utu uua