-er a-a a-i a-t aaa aad aae aaf aag aai aar aat ad- ada add ade adf adg adi adr adt aea aed aee aef aeg aei aer aet af- afa afd afe aff afg afi afr aft ag- aga agd age agf agg agi agr agt ai- aia aid aie aif aig aii air ait ar- ara ard are arf arg ari arr art at- ata atd ate atf atg ati atr att daa dad dae daf dag dai dar dat dda ddd dde ddf ddg ddi ddr ddt de- dea ded dee def deg dei der det dfa dfd dfe dff dfg dfi dfr dft dga dgd dge dgf dgg dgi dgr dgt di- dia did die dif dig dii dir dit dra drd dre drg dri drr drt dta dtd dte dtf dtg dti dtr dtt eaa ead eae eaf eag eai ear eat ed- eda edd ede edf edg edi edr edt eea eed eee eef eeg eer eet ef- efa efd efe eff efg efi efr eft ega egd ege egf egg egi egr egt eia eid eie eif eig eii eir eit era erd ere erf erg eri err ert eta etd ete etf etg eti etr ett faa fad fae faf fag fai far fat fda fdd fde fdf fdg fdi fdr fdt fea fed fee fef feg fei fer fet ffa ffd ffe fff ffg ffi ffr fft fga fgd fge fgf fgg fgi fgr fgt fia fid fie fif fig fii fir fit fra frd fre frf frg fri frr frt fta ftd fte ftf ftg fti ftr ftt g-d gaa gad gae gaf gag gai gar gat gda gdd gde gdf gdi gdr gdt ge- gea ged gee gef geg gei ger get gfa gfd gfe gff gfi gfr gft gga ggd ggg ggi ggr ggt gia gid gie gif gig gii gir git gra grd gre grf grg gri grr grt gta gtd gte gtf gtg gti gtr gtt i-d i-f ia- iaa iad iae iaf iag iai iar iat ida idd ide idf idg idi idr idt ie- iea ied iee ief ieg iei ier iet ifa ifd ife iff ifg ifi ifr ift iga igd ige igf igg igi igr igt iia iid iie iif iii iir iit ir- ira ird ire irf irg iri irr irt ita itd ite itf itg iti itt ra- raa rad rae raf rag rai rar rat rda rdd rde rdf rdg rdi rdr rdt re- rea red ree ref reg rei rer ret rfa rfd rfe rff rfg rfi rfr rft rga rgd rge rgf rgg rgi rgr rgt ria rid rie rif rig rii rir rit rra rrd rrf rrg rri rrr rrt rta rtd rte rtf rtg rti rtr rtt taa tad tae taf tag tai tar tat tda tdd tde tdf tdg tdi tdr tdt te- tea ted tee tef teg tei ter tet tfa tfd tfe tff tfg tfi tfr tft tga tge tgf tgg tgi tgr tgt tia tid tie tif tig tii tir tit tra trd tre trf trg tri trr trt tta ttd tte ttf ttg tti ttr ttt