-er a-a a-i a-t aaa aae aai aap aar aat aea aee aei aep aer aet ai- aia aie aii aip air ait ap- apa ape api app apr apt ar- ara are ari arp arr art at- ata ate ati atp atr att eaa eae eai eap ear eat eea eee eep eer eet eia eie eii eip eir eit ep- epa epe epi epp epr ept era ere eri erp err ert eta ete eti etp etr ett ia- iaa iae iai iap iar iat ie- iea iee iei iep ier iet iia iie iii iip iir iit ipa ipe ipi ipp ipr ipt ir- ira ire iri irp irr irt ita ite iti itp itt p-p paa pae pai pap par pat pea pee pei pep per pet pia pie pii pip pir pit ppa ppe ppi ppp ppr ppt pra pre pri prp prr prt pt- pta pte pti ptp ptr ptt ra- raa rae rai rap rar rat re- rea ree rei rep rer ret ria rie rii rip rir rit rpa rpe rpi rpp rpr rpt rra rri rrp rrr rrt rta rte rti rtp rtr rtt taa tae tai tap tar tat te- tea tee tei tep ter tet tia tie tii tip tir tit tpa tpe tpi tpp tpr tpt tra tre tri trp trr trt tta tte tti ttp ttr ttt