-er a-a a-t aaa aae aag aap aar aat aea aee aeg aep aer aet ag- aga age agg agp agr agt ap- apa ape apg app apr apt ar- ara are arg arp arr art at- ata ate atg atp atr att eaa eae eag eap ear eat eea eee eeg eep eer eet ega ege egg egp egr egt ep- epa epe epg epp epr ept era ere erg erp err ert eta ete etg etp etr ett g-p gaa gae gag gap gar gat ge- gea gee geg gep ger get gga ggg ggp ggr ggt gpa gpe gpg gpp gpr gpt gra gre grg grp grr grt gta gte gtg gtp gtr gtt p-p paa pae pag pap par pat pea pee peg pep per pet pga pge pgg pgp pgr pgt ppa ppe ppg ppp ppr ppt pra pre prg prp prr prt pt- pta pte ptg ptp ptr ptt ra- raa rae rag rap rar rat re- rea ree reg rep rer ret rga rge rgg rgp rgr rgt rpa rpe rpg rpp rpr rpt rra rrg rrp rrr rrt rta rte rtg rtp rtr rtt taa tae tag tap tar tat te- tea tee teg tep ter tet tga tge tgg tgp tgr tgt tpa tpe tpg tpp tpr tpt tra tre trg trp trr trt tta tte ttg ttp ttr ttt