-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aan aao aar aat ab- aba abb abc abd abi abn abo abr abt ac- aca acb acc acd aci acn aco acr act ad- ada adb adc add adi adn ado adr adt ai- aia aib aic aid aii ain aio air ait an- ana anb anc and ani ann ano anr ant aoa aob aoc aod aoi aon aoo aor aot ar- ara arb arc ard ari arn aro arr art at- ata atb atc atd ati atn ato atr att baa bab bac bad bai ban bao bar bat bba bbb bbc bbd bbi bbn bbo bbr bbt bca bcb bcc bcd bci bcn bco bcr bct bda bdb bdc bdd bdi bdo bdr bdt bi- bia bib bic bid bii bin bio bir bit bna bnb bnc bnd bni bnn bno bnr bnt boa bob boc bod boi bon boo bor bot bra brb brd bri brn bro brr brt bta btb btc btd bti btn bto btr btt c-- caa cab cac cad cai can cao car cat cba cbb cbc cbd cbi cbn cbo cbr cbt cca ccb ccc ccd cci ccn cco ccr cct cda cdb cdc cdd cdi cdn cdo cdr cdt ci- cia cib cic cid cii cin cio cir cit cn- cna cnb cnc cnd cni cnn cno cnr cnt co- coa cob coc cod coi con coo cor cot cra crb crc crd cri crn cro crr crt cta ctb ctc ctd cti ctn cto ctr ctt daa dab dac dad dai dan dao dar dat dba dbb dbc dbd dbi dbn dbo dbr dbt dca dcb dcc dcd dci dcn dco dcr dct dda ddb ddc ddd ddi ddn ddo ddr ddt di- dia dib dic did dii din dio dir dit dna dnb dnc dnd dni dnn dno dnr dnt doa dob doc dod doi don doo dor dot dra drb drc drd dri drn dro drr drt dta dtb dtc dtd dti dtn dto dtr dtt i-d ia- iaa iab iac iad iai ian iao iar iat iba ibb ibc ibd ibi ibn ibo ibr ibt ica icb icc icd ici icn ico icr ict ida idb idc idd idi idn ido idr idt iia iib iic iid iii iin iio iir iit in- ina inb inc ind ini inn ino inr int io- ioa iob ioc iod ioi ion ioo ior iot ir- ira irb irc ird iri irn iro irr irt ita itb itc itd iti itn ito itt n-i naa nab nac nad nai nan nao nar nat nba nbb nbc nbd nbi nbn nbo nbr nbt nca ncb ncc ncd nci ncn nco ncr nct nda ndb ndc ndd ndi ndn ndo ndr ndt nia nib nic nid nii nin nio nir nit nna nnb nnc nni nnn nno nnt no- noa nob noc nod noi non noo nor not nra nrb nrc nrd nri nrn nro nrr nrt nta ntb ntc ntd nti ntn nto ntr ntt o-i oaa oab oac oad oai oan oao oar oat ob- oba obb obc obd obi obn obo obr obt oc- oca ocb occ ocd oci ocn oco ocr oct oda odb odc odd odi odn odo odr odt oia oib oic oid oii oin oio oir oit on- ona onb onc ond oni onn ono onr ont oo- ooa oob ooc ood ooi oon ooo oor oot or- ora orb orc ord ori orn oro orr ort ot- ota otb otc otd oti otn oto otr ott ra- raa rab rac rad rai ran rao rar rat rba rbb rbc rbd rbi rbn rbo rbr rbt rca rcb rcc rcd rci rcn rco rcr rct rda rdb rdc rdd rdi rdn rdo rdr rdt ria rib ric rid rii rin rio rir rit rna rnb rnc rnd rni rnn rno rnr rnt roa rob roc rod roi ron roo ror rot rra rrb rrc rrd rri rrn rrr rrt rta rtb rtc rtd rti rtn rto rtr rtt taa tab tac tad tai tan tao tar tat tba tbb tbc tbd tbi tbn tbo tbr tbt tca tcb tcc tcd tci tcn tco tcr tct tda tdb tdc tdd tdi tdn tdo tdr tdt tia tib tic tid tii tin tio tir tit tna tnb tnc tnd tni tnn tno tnr tnt to- toa tob toc tod toi ton too tor tot tra trb trc trd tri trn tro trr trt tta ttb ttc ttd tti ttn tto ttr ttt