-er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aao aar aau ab- aba abb abc abe abg abi abo abr abu ac- aca acb acc ace acg aci aco acr acu aea aeb aec aee aeg aei aeo aer aeu ag- aga agb agc age agg agi ago agr agu ai- aia aib aic aie aig aii aio air aiu aoa aob aoc aoe aog aoi aoo aor aou ar- ara arb arc are arg ari aro arr aru au- aua aub auc aue aug aui auo aur b-u baa bab bac bae bag bai bao bar bau bba bbb bbc bbe bbg bbi bbo bbr bbu bca bcb bcc bce bcg bci bco bcr bcu be- bea beb bec bee beg bei beo ber beu bga bgb bgc bge bgg bgi bgo bgr bgu bi- bia bib bic bie big bii bio bir biu boa bob boc boe bog boi boo bor bou bra brb bre brg bri bro brr bru bua bub buc bue bug bui buo bur buu c-- caa cab cac cae cag cai cao car cau cba cbb cbc cbe cbg cbi cbo cbr cbu cca ccb ccc cce ccg cci cco ccr ccu ce- cea ceb cec cee ceg cei ceo cer ceu cga cgb cgc cge cgg cgi cgo cgr cgu ci- cia cib cic cie cig cii cio cir ciu co- coa cob coc coe cog coi coo cor cou cra crb crc cre crg cri cro crr cru cua cub cuc cue cug cui cuo cur cuu eaa eab eac eae eag eai eao ear eau eba ebb ebc ebe ebg ebi ebo ebr ebu ec- eca ecb ecc ece ecg eci eco ecr ecu eea eeb eec eee eeg eeo eer ega egb egc ege egg egi ego egr egu eia eib eic eie eig eii eio eir eiu eo- eoa eob eoc eoe eog eoi eoo eor eou era erb erc ere erg eri ero err eru eu- eua eub euc eue eug eui eur gaa gab gac gae gag gai gao gar gau gba gbc gbe gbg gbi gbo gbr gbu gca gcb gcc gce gcg gci gco gcr gcu ge- gea geb gec gee geg gei geo ger geu gga ggb ggc ggg ggi ggo ggr ggu gia gib gic gie gig gii gio gir giu goa gob goc goe gog goi goo gor gou gra grb grc gre grg gri gro grr gru gu- gua gub guc gue gug gui guo gur guu ia- iaa iab iac iae iag iai iao iar iau iba ibb ibc ibe ibg ibi ibo ibr ibu ica icb icc ice icg ici ico icr icu ie- iea iec iee ieg iei ier iga igb igc ige igg igi igo igr igu iia iib iic iie iii iio iir iiu io- ioa iob ioc ioe iog ioi ioo ior iou ir- ira irb irc ire irg iri iro irr iru iu- iua iub iuc iue iug iui iur o-i oaa oab oac oae oag oai oao oar oau ob- oba obb obc obe obg obi obo obr obu oc- oca ocb occ ocg oci oco ocr ocu oea oeb oec oee oeg oei oeo oer oga ogc oge ogg ogi ogo oia oib oic oie oii oio oir oiu oo- ooa oob ooc oog ooi ooo oor or- ora orb orc ore org ori oro orr oru ou- oua ouc oue oui ouo our ra- raa rab rac rae rag rai rao rar rau rba rbb rbc rbe rbg rbi rbo rbr rbu rca rcb rcc rce rcg rci rco rcr rcu re- rea reb rec ree reg rei reo rer reu rga rgb rgc rge rgg rgi rgo rgr ria rib ric rie rig rii rio rir roa rob roc roe rog roi roo ror rou rra rrb rrc rrg rri rrr rru rua rub ruc rue rug rui ruo rur ruu ua- uaa uab uac uae uag uai uao uar uau uba ubb ubc ube ubg ubi ubo ubr ubu uca ucb ucc uce ucg uci uco ucr ucu uea ueb uec uee ueg uei uer uga ugb ugc uge ugg ugi ugo ugr ugu uia uib uic uie uig uii uio uir uiu uoa uob uoc uoe uog uoo uor ur- ura urb urc ure urg uri uro urr uru uua uuc uue uug uur uuu

a-be a-ii aaaa aaab aaac aaae aaai aaar aaba aabb aabc aabi aaca aacb aacc aace aaci aaco aacr aacu aaea aaec aage aaib aaic aaii aaoe aaoo aara aarc aare aari aaro aaru abaa abab abac abae abag abai abar abau abb- abba abbb abbe abbi abbo abbr abca abcb abcc abci abcr abec abee aber abia abib abic abie abig abir abiu aboa abob aboo abor abou abra abrc abri abro abua abue abug acaa acab acac acae acag acai acar acba acca accc acce acci acco accu ace- acea acec acer acga acgi acgr aci- acia acic acie acir acoa acoe acog acor acou acr- acra acrc acre acri acro acrr acu- acue acuo acur aeac aebi aecb aeci aeer aega aeio aer- aera aerc aeri aero ag-o agac agag agai agao agar agau agba agbo agca agcc agce agco agea agee agei ager agga agge aggi aggu agia agib agic agie agig agii agio agir agob agog agoo agou agra agre agri agro agua ague agui agur aiai aiba aibo aica aicc aice aicr aiea aiee aiga aigo aiia aiib aiic aiir aioc aioi aira aire airi airo aiui aoba aoca aoce aoeu aora aorb arab arac arae arag arai arar arau arba arbe arbi arc- arca arce arci arco area arec aree areg arei areo areu arga argb arge argi argo aria arib arie arig arii ario aroa arob aroe aroi aroo aror arr- arra arrc arre arrg arri arro arrr arru arua arub arue arug arui auaa aube auca auce auci auer auga auge augi aur- aura aure auri auro auug ba-i