-er -ic a-a a-b a-c a-i aaa aab aac aae aah aai aao aar aas aau ab- aba abb abc abe abh abi abo abr abs abu ac- aca acb acc ace ach aci aco acr acs acu aea aeb aec aee aeh aei aeo aer aes aeu aha ahb ahc ahe ahh ahi aho ahr ahs ahu ai- aia aib aic aie aih aii aio air ais aiu aoa aob aoc aoe aoh aoi aoo aor aos aou ar- ara arb arc are arh ari aro arr ars aru as- asa asb asc ase ash asi aso asr ass asu au- aua aub auc aue auh aui auo aur aus b-u baa bab bac bae bah bai bao bar bas bau bba bbb bbc bbe bbh bbi bbo bbr bbs bbu bca bcb bcc bce bch bci bco bcr bcs bcu be- bea beb bec bee beh bei beo ber bes beu bha bhb bhc bhe bhh bhi bho bhr bhs bhu bi- bia bib bic bie bih bii bio bir bis biu boa bob boc boe boh boi boo bor bos bou bra brb bre brh bri bro brr brs bru bsa bsb bsc bse bsh bsi bso bsr bss bsu bua bub buc bue buh bui buo bur bus buu c-- caa cab cac cae cah cai cao car cas cau cba cbb cbc cbe cbh cbi cbo cbr cbs cbu cca ccb ccc cce cch cci cco ccr ccs ccu ce- cea ceb cec cee ceh cei ceo cer ces ceu ch- cha chb chc che chh chi cho chr chs chu ci- cia cib cic cie cih cii cio cir cis ciu co- coa cob coc coe coh coi coo cor cos cou cra crb crc cre crh cri cro crr crs cru csa csb csc cse csh csi cso csr css csu cua cub cuc cue cuh cui cuo cur cus cuu eaa eab eac eae eah eai eao ear eas eau eba ebb ebc ebe ebh ebi ebo ebr ebs ebu ec- eca ecb ecc ece ech eci eco ecr ecs ecu eea eeb eec eee eeo eer ees eha ehb ehc ehe ehh ehi eho ehr ehs ehu eia eib eic eie eii eio eir eis eiu eo- eoa eob eoc eoe eoh eoi eoo eor eos eou era erb erc ere erh eri ero err ers eru es- esa esb esc ese esh esi eso esr ess esu eu- eua eub euc eue eui eur eus h-i haa hab hac hae hah hai hao har has hau hba hbb hbc hbe hbh hbi hbo hbr hbs hbu hca hcb hcc hce hch hci hco hcr hcs he- hea heb hec hee heh hei heo her hes heu hha hhb hhc hhe hhh hhi hho hhr hhs hhu hia hib hic hie hih hii hio hir his hiu hoa hob hoc hoe hoh hoi hoo hor hos hou hr- hra hrb hrc hre hrh hri hro hrr hrs hru hsa hsb hsc hse hsh hsi hsr hss hsu hua hub huc hue huh hui huo hur hus huu ia- iaa iab iac iae iah iai iao iar ias iau iba ibb ibc ibe ibh ibi ibo ibr ibs ibu ica icb icc ice ich ici ico icr ics icu ie- iea iec iee iei ier ies iha ihb ihc ihe ihh ihi iho ihr ihs ihu iia iib iic iie iih iii iio iir iis iiu io- ioa iob ioc ioe ioh ioi ioo ior ios iou ir- ira irb irc ire iri iro irr irs iru is- isa isb isc ise ish isi iso isr iss isu iu- iua iub iuc iue iui iur ius o-i oaa oab oac oae oah oai oao oar oas oau ob- oba obb obc obe obh obi obo obr obs obu oc- oca ocb occ och oci oco ocr ocs ocu oea oeb oec oee oeh oei oeo oer oes oha ohc ohe ohh ohi oho ohr ohs ohu oia oib oic oie oii oio oir ois oiu oo- ooa oob ooc ooh ooi ooo oor oos or- ora orb orc ore orh ori oro orr ors oru os- osa osb osc ose osh osi oso osr oss osu ou- oua ouc oue ouh oui ouo our ous ra- raa rab rac rae rah rai rao rar ras rau rba rbb rbc rbe rbh rbi rbo rbr rbs rbu rca rcb rcc rce rch rci rco rcr rcs rcu re- rea reb rec ree reh rei reo rer res reu rh- rha rhb rhc rhe rhh rhi rho rhr rhs rhu ria rib ric rie rih rii rio rir ris roa rob roc roe roh roi roo ror ros rou rra rrb rrc rrh rri rrr rrs rru rsa rsb rsc rse rsh rsi rso rsr rss rsu rua rub ruc rue ruh rui ruo rur rus ruu saa sab sac sae sah sai sao sar sas sau sba sbb sbc sbe sbh sbi sbo sbr sbs sbu sca scb scc sce sch sci sco scr scs scu se- sea seb sec see seh sei seo ser ses seu sh- sha shb shc she shh shi sho shr shs shu sia sib sic sie sih sii sio sir sis siu soa sob soc soe soh soi soo sor sos sou sr- sra srb src sre srh sri sro srr srs ss- ssa ssb ssc sse ssh ssi sso ssr sss ssu sua sub suc sue suh sui suo sur sus suu ua- uaa uab uac uae uah uai uao uar uas uau uba ubb ubc ube ubh ubi ubo ubr ubs ubu uca ucb ucc uce uch uci uco ucr ucs ucu uea ueb uec uee ueh uei uer ues uha uhb uhc uhe uhh uhi uho uhr uhs uhu uia uib uic uie uii uio uir uis uiu uoa uob uoc uoe uoo uor uos ur- ura urb urc ure uri uro urr urs uru usa usb usc use ush usi uso usr uss