-er a-a a-t aaa aad aae aag aan aap aar aat ad- ada add ade adg adn adp adr adt aea aed aee aeg aen aep aer aet ag- aga agd age agg agn agp agr agt an- ana and ane ang ann anp anr ant ap- apa apd ape apg apn app apr apt ar- ara ard are arg arn arp arr art at- ata atd ate atg atn atp atr att daa dad dae dag dan dap dar dat dda ddd dde ddg ddn ddp ddr ddt de- dea ded dee deg den dep der det dga dgd dge dgg dgn dgp dgr dgt dna dnd dne dng dnn dnp dnr dnt dpa dpd dpe dpg dpn dpp dpr dpt dra drd dre drg drn drp drr drt dta dtd dte dtg dtn dtp dtr dtt eaa ead eae eag ean eap ear eat ed- eda edd ede edg edn edp edr edt eea eed eee eeg een eep eer eet ega egd ege egg egn egp egr egt en- ena end ene eng enn enp enr ent ep- epa epd epe epg epn epp epr ept era erd ere erg ern erp err ert eta etd ete etg etn etp etr ett g-d g-p gaa gad gae gag gan gap gar gat gda gdd gde gdn gdp gdr gdt ge- gea ged gee geg gen gep ger get gga ggd ggg ggn ggp ggr ggt gna gnd gne gnn gnp gnr gnt gpa gpd gpe gpg gpn gpp gpr gpt gra grd gre grg grn grp grr grt gta gtd gte gtg gtn gtp gtr gtt naa nad nae nag nan nap nar nat nda ndd nde ndg ndn ndp ndr ndt ne- nea ned nee neg nen nep ner net nga ngd nge ngg ngn ngp ngt nna nne nng nnn nnp nnt npa npd npe npg npn npp npr npt nra nrd nre nrg nrn nrp nrr nrt nta ntd nte ntg ntn ntp ntr ntt p-p paa pad pae pag pan pap par pat pda pdd pde pdg pdn pdp pdr pdt pea ped pee peg pen pep per pet pga pgd pge pgg pgn pgp pgr pgt pn- pna pnd pne png pnn pnp pnr pnt ppa ppd ppe ppg ppn ppp ppr ppt pra prd pre prg prn prp prr prt pt- pta ptd pte ptg ptn ptp ptr ptt ra- raa rad rae rag ran rap rar rat rda rdd rde rdg rdn rdp rdr rdt re- rea red ree reg ren rep rer ret rga rgd rge rgg rgn rgp rgr rgt rna rnd rng rnn rnp rnr rnt rpa rpd rpe rpg rpn rpp rpr rpt rra rrd rrg rrn rrp rrr rrt rta rtd rte rtg rtn rtp rtr rtt taa tad tae tag tan tap tar tat tda tdd tde tdg tdn tdp tdr tdt te- tea ted tee teg ten tep ter tet tga tge tgg tgn tgp tgr tgt tna tnd tne tng tnn tnp tnr tnt tpa tpd tpe tpg tpn tpp tpr tpt tra trd tre trg trn trp trr trt tta ttd tte ttg ttn ttp ttr ttt