a-a aaa aad aae aaf aag aan ad- ada add ade adf adg adn aea aed aee aef aeg aen af- afa afd afe aff afg afn ag- aga agd age agf agg agn an- ana and ane anf ang ann daa dad dae daf dag dan dda ddd dde ddf ddg ddn de- dea ded dee def deg den dfa dfd dfe dff dfg dfn dga dgd dge dgf dgg dgn dna dnd dne dnf dng dnn eaa ead eae eaf eag ean ed- eda edd ede edf edg edn eea eed eee eef eeg een ef- efa efd efe eff efg ega egd ege egf egg egn en- ena end ene enf eng enn faa fad fae faf fag fan fda fdd fde fdf fdg fdn fea fed fee fef feg fen ffa ffd ffe fff ffg ffn fga fgd fge fgf fgg fgn fna fnd fne fnf fng fnn g-d gaa gad gae gaf gag gan gda gdd gde gdf gdn ge- gea ged gee gef geg gen gfa gfd gfe gff gga ggd ggg ggn gna gnd gne gnf gnn naa nad nae naf nag nan nda ndd nde ndf ndg ndn ne- nea ned nee nef neg nen nfa nfd nfe nff nfn nga ngd nge ngf ngg ngn nna nne nnf nng nnn