-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aao aar aat aau ab- aba abb abc abd abi abo abr abt abu ac- aca acb acc acd aci aco acr act acu ad- ada adb adc add adi ado adr adt adu ai- aia aib aic aid aii aio air ait aiu aoa aob aoc aod aoi aoo aor aot aou ar- ara arb arc ard ari aro arr art aru at- ata atb atc atd ati ato atr att atu au- aua aub auc aud aui auo aur aut b-u baa bab bac bad bai bao bar bat bau bba bbb bbc bbd bbi bbo bbr bbt bbu bca bcb bcc bcd bci bco bcr bct bcu bda bdb bdc bdd bdi bdo bdr bdt bdu bi- bia bib bic bid bii bio bir bit biu boa bob boc bod boi boo bor bot bou bra brb brd bri bro brr brt bru bta btb btc btd bti bto btr btt btu bua bub buc bud bui buo bur but buu c-- caa cab cac cad cai cao car cat cau cba cbb cbc cbd cbi cbo cbr cbt cbu cca ccb ccc ccd cci cco ccr cct ccu cda cdb cdc cdd cdi cdo cdr cdt cdu ci- cia cib cic cid cii cio cir cit ciu co- coa cob coc cod coi coo cor cot cou cra crb crc crd cri cro crr crt cru cta ctb ctc ctd cti cto ctr ctt ctu cua cub cuc cud cui cuo cur cut cuu daa dab dac dad dai dao dar dat dau dba dbb dbc dbd dbi dbo dbr dbt dbu dca dcb dcc dcd dci dco dcr dct dcu dda ddb ddc ddd ddi ddo ddr ddt ddu di- dia dib dic did dii dio dir dit diu doa dob doc dod doi doo dor dot dou dra drb drc drd dri dro drr drt dru dta dtb dtc dtd dti dto dtr dtt dtu dua dub duc dud dui duo dur dut i-d ia- iaa iab iac iad iai iao iar iat iau iba ibb ibc ibd ibi ibo ibr ibt ibu ica icb icc icd ici ico icr ict icu ida idb idc idd idi ido idr idt idu iia iib iic iid iii iio iir iit iiu io- ioa iob ioc iod ioi ioo ior iot iou ir- ira irb irc ird iri iro irr irt iru ita itb itc itd iti ito itt itu iu- iua iub iuc iud iui iur iut o-i oaa oab oac oad oai oao oar oat oau ob- oba obb obc obd obi obo obr obt obu oc- oca ocb occ ocd oci oco ocr oct ocu oda odb odc odd odi odo odr odt odu oia oib oic oid oii oio oir oit oiu oo- ooa oob ooc ood ooi ooo oor oot or- ora orb orc ord ori oro orr ort oru ot- ota otb otc otd oti oto otr ott otu ou- oua ouc oud oui ouo our out ra- raa rab rac rad rai rao rar rat rau rba rbb rbc rbd rbi rbo rbr rbt rbu rca rcb rcc rcd rci rco rcr rct rcu rda rdb rdc rdd rdi rdo rdr rdt rdu ria rib ric rid rii rio rir rit roa rob roc rod roi roo ror rot rou rra rrb rrc rrd rri rrr rrt rru rta rtb rtc rtd rti rto rtr rtt rtu rua rub ruc rud rui ruo rur rut ruu taa tab tac tad tai tao tar tat tau tba tbb tbc tbd tbi tbo tbr tbt tbu tca tcb tcc tcd tci tco tcr tct tcu tda tdb tdc tdd tdi tdo tdr tdt tdu tia tib tic tid tii tio tir tit tiu to- toa tob toc tod toi too tor tot tou tra trb trc trd tri tro trr trt tru tta ttb ttc ttd tti tto ttr ttt ttu tua tub tuc tud tui tuo tur tut tuu ua- uaa uab uac uad uai uao uar uat uau uba ubb ubc ubi ubo ubr ubt ubu uca ucb ucc ucd uci uco ucr uct ucu uda udb udc udd udi udo udr udt udu uia uib uic uid uii uio uir uit uiu uoa uob uoc uod uoo uor uot ur- ura urb urc urd uri uro urr urt uru uta utb utc utd uti uto utr utt utu uua uuc uur uut uuu