a-a a-b a-i aaa aab aad aae aag aai aak aan ab- aba abb abd abe abg abi abk abn ad- ada adb add ade adg adi adk adn aea aeb aed aee aeg aei aek aen ag- aga agb agd age agg agi agk agn ai- aia aib aid aie aig aii aik ain aka akb akd ake akg aki akk akn an- ana anb and ane ang ani ank ann baa bab bad bae bag bai bak ban bba bbb bbd bbe bbg bbi bbk bbn bda bdb bdd bde bdg bdi bdk be- bea beb bed bee beg bei bek ben bga bgb bgd bge bgg bgi bgk bgn bi- bia bib bid bie big bii bik bin bka bkb bke bkg bkk bkn bna bnb bnd bne bng bni bnk bnn daa dab dad dae dag dai dak dan dba dbb dbd dbe dbg dbi dbk dbn dda ddb ddd dde ddg ddi ddk ddn de- dea deb ded dee deg dei dek den dga dgd dge dgg dgi dgk dgn di- dia dib did die dig dii dik din dka dkb dke dkg dki dkk dna dnb dnd dne dng dni dnk dnn eaa eab ead eae eag eai eak ean eba ebb ebd ebe ebg ebi ebk ebn ed- eda edb edd ede edg edi edk edn eea eeb eed eee eeg eek een ega egb egd ege egg egi egn eia eib eid eie eig eii eik ein eka ekb ekd eke ekg eki en- ena enb end ene eng eni enk enn g-d gaa gab gad gae gag gai gak gan gba gbd gbe gbg gbi gbk gbn gda gdb gdd gde gdi gdk gdn ge- gea geb ged gee geg gei gek gen gga ggb ggd ggg ggi ggn gia gib gid gie gig gii gik gin gka gkb gkd gkn gna gnb gnd gne gni gnn i-d ia- iaa iab iad iae iag iai ian iba ibb ibd ibe ibg ibi ibk ibn ida idb idd ide idg idi idk idn ie- iea ied iee ieg iei iek ien iga igb igd ige igg igi igk ign iia iib iid iie iii iin ika ikb ike iki ikk in- ina inb ind ine ing ini ink inn ka- kaa kab kad kae kag kai kak kan kba kbb kbd kbe kbi kbk kbn kda kdb kde kdg kdk ke- kea keb ked kee keg kei kek ken kga kgb kgd kgi kia kib kid kie kig kii kik kin kkb kke kki kkk kkn kn- kna knd kne kng kni knk knn n-i naa nab nad nae nag nai nak nan nba nbb nbd nbe nbg nbi nbk nbn nda ndb ndd nde ndg ndi ndk ndn ne- nea neb ned nee neg nei nek nen nga ngb ngd nge ngg ngi ngk ngn nia nib nid nie nig nii nik nin nka nke nki nkk nkn nna nnb nne nng nni nnk nnn