-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aan aao aat ab- aba abb abc abd abi abn abo abt ac- aca acb acc acd aci acn aco act ad- ada adb adc add adi adn ado adt ai- aia aib aic aid aii ain aio ait an- ana anb anc and ani ann ano ant aoa aob aoc aod aoi aon aoo aot at- ata atb atc atd ati atn ato att baa bab bac bad bai ban bao bat bba bbb bbc bbd bbi bbn bbo bbt bca bcb bcc bcd bci bcn bco bct bda bdb bdc bdd bdi bdo bdt bi- bia bib bic bid bii bin bio bit bna bnb bnc bnd bni bnn bno bnt boa bob boc bod boi bon boo bot bta btb btc btd bti btn bto btt c-- caa cab cac cad cai can cao cat cba cbb cbc cbd cbi cbn cbo cbt cca ccb ccc ccd cci ccn cco cct cda cdb cdc cdd cdi cdn cdo cdt ci- cia cib cic cid cii cin cio cit cn- cna cnb cnc cnd cni cnn cno cnt co- coa cob coc cod coi con coo cot cta ctb ctc ctd cti ctn cto ctt daa dab dac dad dai dan dao dat dba dbb dbc dbd dbi dbn dbo dbt dca dcb dcc dcd dci dcn dco dct dda ddb ddc ddd ddi ddn ddo ddt di- dia dib dic did dii din dio dit dna dnb dnc dnd dni dnn dno dnt doa dob doc dod doi don doo dot dta dtb dtc dtd dti dtn dto dtt i-d ia- iaa iab iac iad iai ian iao iat iba ibb ibc ibd ibi ibn ibo ibt ica icb icc icd ici icn ico ict ida idb idc idd idi idn ido idt iia iib iic iid iii iin iio iit in- ina inb inc ind ini inn ino int io- ioa iob ioc iod ioi ion ioo iot ita itb itc itd iti itn ito itt n-i naa nab nac nad nai nan nao nat nba nbb nbc nbd nbi nbn nbo nbt nca ncb ncc ncd nci ncn nco nct nda ndb ndc ndd ndi ndn ndo ndt nia nib nic nid nii nin nio nit nna nnb nnc nni nnn nno nnt no- noa nob noc nod noi non noo not nta ntb ntc ntd nti ntn nto ntt o-i oaa oab oac oad oai oan oao oat ob- oba obb obc obd obi obn obo obt oc- oca ocb occ ocd oci ocn oco oct oda odb odc odd odi odn odo odt oia oib oic oid oii oin oio oit on- ona onb onc ond oni onn ono ont oo- ooa oob ooc ood ooi oon ooo oot ot- ota otb otc otd oti otn oto ott taa tab tac tad tai tan tao tat tba tbb tbc tbd tbi tbn tbo tbt tca tcb tcc tcd tci tcn tco tct tda tdb tdc tdd tdi tdn tdo tdt tia tib tic tid tii tin tio tit tna tnb tnc tnd tni tnn tno tnt to- toa tob toc tod toi ton too tot tta ttb ttc ttd tti ttn tto ttt