-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aar aat aau ab- aba abb abc abd abe abi abr abt abu ac- aca acb acc acd ace aci acr act acu ad- ada adb adc add ade adi adr adt adu aea aeb aec aed aee aei aer aet aeu ai- aia aib aic aid aie aii air ait aiu ar- ara arb arc ard are ari arr art aru at- ata atb atc atd ate ati atr att atu au- aua aub auc aud aue aui aur aut b-u baa bab bac bad bae bai bar bat bau bba bbb bbc bbd bbe bbi bbr bbt bbu bca bcb bcc bcd bce bci bcr bct bcu bda bdb bdc bdd bde bdi bdr bdt bdu be- bea beb bec bed bee bei ber bet beu bi- bia bib bic bid bie bii bir bit biu bra brb brd bre bri brr brt bru bta btb btc btd bte bti btr btt btu bua bub buc bud bue bui bur but buu c-- caa cab cac cad cae cai car cat cau cba cbb cbc cbd cbe cbi cbr cbt cbu cca ccb ccc ccd cce cci ccr cct ccu cda cdb cdc cdd cde cdi cdr cdt cdu ce- cea ceb cec ced cee cei cer cet ceu ci- cia cib cic cid cie cii cir cit ciu cra crb crc crd cre cri crr crt cru cta ctb ctc ctd cte cti ctr ctt ctu cua cub cuc cud cue cui cur cut cuu daa dab dac dad dae dai dar dat dau dba dbb dbc dbd dbe dbi dbr dbt dbu dca dcb dcc dcd dce dci dcr dct dcu dda ddb ddc ddd dde ddi ddr ddt ddu de- dea deb dec ded dee dei der det deu di- dia dib dic did die dii dir dit diu dra drb drc drd dre dri drr drt dru dta dtb dtc dtd dte dti dtr dtt dtu dua dub duc dud due dui dur dut eaa eab eac ead eae eai ear eat eau eba ebb ebc ebd ebe ebi ebr ebt ebu ec- eca ecb ecc ecd ece eci ecr ect ecu ed- eda edb edc edd ede edi edr edt edu eea eeb eec eed eee eer eet eia eib eic eid eie eii eir eit eiu era erb erc erd ere eri err ert eru eta etb etc etd ete eti etr ett etu eu- eua eub euc eud eue eui eur eut i-d ia- iaa iab iac iad iae iai iar iat iau iba ibb ibc ibd ibe ibi ibr ibt ibu ica icb icc icd ice ici icr ict icu ida idb idc idd ide idi idr idt idu ie- iea iec ied iee iei ier iet iia iib iic iid iie iii iir iit iiu ir- ira irb irc ird ire iri irr irt iru ita itb itc itd ite iti itt itu iu- iua iub iuc iud iue iui iur iut ra- raa rab rac rad rae rai rar rat rau rba rbb rbc rbd rbe rbi rbr rbt rbu rca rcb rcc rcd rce rci rcr rct rcu rda rdb rdc rdd rde rdi rdr rdt rdu re- rea reb rec red ree rei rer ret reu ria rib ric rid rie rii rir rit rra rrb rrc rrd rri rrr rrt rru rta rtb rtc rtd rte rti rtr rtt rtu rua rub ruc rud rue rui rur rut ruu taa tab tac tad tae tai tar tat tau tba tbb tbc tbd tbe tbi tbr tbt tbu tca tcb tcc tcd tce tci tcr tct tcu tda tdb tdc tdd tde tdi tdr tdt tdu te- tea teb tec ted tee tei ter tet teu tia tib tic tid tie tii tir tit tiu tra trb trc trd tre tri trr trt tru tta ttb ttc ttd tte tti ttr ttt ttu tua tub tuc tud tue tui tur tut tuu ua- uaa uab uac uad uae uai uar uat uau uba ubb ubc ube ubi ubr ubt ubu uca ucb ucc ucd uce uci ucr uct ucu uda udb udc udd ude udi udr udt udu uea ueb uec ued uee uei uer uet uia uib uic uid uie uii uir uit uiu ur- ura urb urc urd ure uri urr urt uru uta utb utc utd ute uti utr utt utu uua uuc uue uur uut uuu