a-a a-b aaa aab aae aaj aam aan aao ab- aba abb abe abj abm abn abo aea aeb aee aej aem aen aeo aja ajb aje ajj ajm ajn ajo ama amb ame amm amn amo an- ana anb ane anj anm ann ano aoa aob aoe aoj aom aon aoo baa bab bae baj bam ban bao bba bbb bbe bbm bbn bbo be- bea beb bee bem ben beo bja bjj bjm bjn bma bmb bme bmj bmm bmn bmo bna bnb bne bnj bnn bno boa bob boe boj bom bon boo eaa eab eae eaj eam ean eao eba ebb ebe ebj ebm ebn ebo eea eeb eee eem een eeo eja ejo em- ema emb eme emm emn emo en- ena enb ene enm enn eno eo- eoa eob eoe eom eon eoo jaa jab jae jaj jam jan jao jba jbj jbm jbo jea jeb jee jej jem jen jeo jja jjb jjj jma jmb jme jmj jmm jmn jmo jna jne jnj jnn jno joa job joe joj jom jon joo m-o maa mab mae maj mam man mao mba mbb mbe mbj mbm mbo mea meb mee mej mem men meo mjb mje mjj mjm mma mmb mme mmj mmm mmn mmo mna mnb mne mnj mnm mnn mno moa mob moe mom mon moo naa nab nae naj nam nan nao nba nbb nbe nbm nbn nbo ne- nea neb nee nej nem nen neo nja nje njm njn nma nmb nme nmm nmn nmo nna nnb nne nnm nnn nno no- noa nob noe noj nom non noo oaa oab oae oaj oam oan oao ob- oba obb obe obj obm obn obo oea oeb oee oem oen oeo oja ojb oje ojm ojo om- oma omb ome omj omm omn omo on- ona onb one onj onn ono oo- ooa oob oom oon ooo