-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aan aao aat aau ab- aba abb abc abd abi abn abo abt abu ac- aca acb acc acd aci acn aco act acu ad- ada adb adc add adi adn ado adt adu ai- aia aib aic aid aii ain aio ait aiu an- ana anb anc and ani ann ano ant anu aoa aob aoc aod aoi aon aoo aot aou at- ata atb atc atd ati atn ato att atu au- aua aub auc aud aui aun auo aut b-u baa bab bac bad bai ban bao bat bau bba bbb bbc bbd bbi bbn bbo bbt bbu bca bcb bcc bcd bci bcn bco bct bcu bda bdb bdc bdd bdi bdo bdt bdu bi- bia bib bic bid bii bin bio bit biu bna bnb bnc bnd bni bnn bno bnt bnu boa bob boc bod boi bon boo bot bou bta btb btc btd bti btn bto btt btu bua bub buc bud bui bun buo but buu c-- caa cab cac cad cai can cao cat cau cba cbb cbc cbd cbi cbn cbo cbt cbu cca ccb ccc ccd cci ccn cco cct ccu cda cdb cdc cdd cdi cdn cdo cdt cdu ci- cia cib cic cid cii cin cio cit ciu cn- cna cnb cnc cnd cni cnn cno cnt cnu co- coa cob coc cod coi con coo cot cou cta ctb ctc ctd cti ctn cto ctt ctu cua cub cuc cud cui cun cuo cut cuu daa dab dac dad dai dan dao dat dau dba dbb dbc dbd dbi dbn dbo dbt dbu dca dcb dcc dcd dci dcn dco dct dcu dda ddb ddc ddd ddi ddn ddo ddt ddu di- dia dib dic did dii din dio dit diu dna dnb dnc dnd dni dnn dno dnt doa dob doc dod doi don doo dot dou dta dtb dtc dtd dti dtn dto dtt dtu dua dub duc dud dui dun duo dut i-d ia- iaa iab iac iad iai ian iao iat iau iba ibb ibc ibd ibi ibn ibo ibt ibu ica icb icc icd ici icn ico ict icu ida idb idc idd idi idn ido idt idu iia iib iic iid iii iin iio iit iiu in- ina inb inc ind ini inn ino int inu io- ioa iob ioc iod ioi ion ioo iot iou ita itb itc itd iti itn ito itt itu iu- iua iub iuc iud iui iut n-i naa nab nac nad nai nan nao nat nau nba nbb nbc nbd nbi nbn nbo nbt nbu nca ncb ncc ncd nci ncn nco nct ncu nda ndb ndc ndd ndi ndn ndo ndt ndu nia nib nic nid nii nin nio nit niu nna nnb nnc nni nnn nno nnt nnu no- noa nob noc nod noi non noo not nou nta ntb ntc ntd nti ntn nto ntt ntu nua nub nuc nud nui nun nuo nut nuu o-i oaa oab oac oad oai oan oao oat oau ob- oba obb obc obd obi obn obo obt obu oc- oca ocb occ ocd oci ocn oco oct ocu oda odb odc odd odi odn odo odt odu oia oib oic oid oii oin oio oit oiu on- ona onb onc ond oni onn ono ont onu oo- ooa oob ooc ood ooi oon ooo oot ot- ota otb otc otd oti otn oto ott otu ou- oua ouc oud oui oun ouo out taa tab tac tad tai tan tao tat tau tba tbb tbc tbd tbi tbn tbo tbt tbu tca tcb tcc tcd tci tcn tco tct tcu tda tdb tdc tdd tdi tdn tdo tdt tdu tia tib tic tid tii tin tio tit tiu tna tnb tnc tnd tni tnn tno tnt to- toa tob toc tod toi ton too tot tou tta ttb ttc ttd tti ttn tto ttt ttu tua tub tuc tud tui tun tuo tut tuu ua- uaa uab uac uad uai uan uao uat uau uba ubb ubc ubi ubn ubo ubt ubu uca ucb ucc ucd uci ucn uco uct ucu uda udb udc udd udi udn udo udt udu uia uib uic uid uii uin uio uit uiu un- una unb unc und uni unn uno unt unu uoa uob uoc uod uon uoo uot uta utb utc utd uti utn uto utt utu uua uuc uun uut uuu