-er a-a a-i a-t aaa aad aae aai aap aar aat aax ad- ada add ade adi adp adr adt adx aea aed aee aei aep aer aet aex ai- aia aid aie aii aip air ait aix ap- apa apd ape api app apr apt apx ar- ara ard are ari arp arr art arx at- ata atd ate ati atp atr att atx ax- axa axe axi axp axr axt axx daa dad dae dai dap dar dat dax dda ddd dde ddi ddp ddr ddt ddx de- dea ded dee dei dep der det dex di- dia did die dii dip dir dit dix dpa dpd dpe dpi dpp dpr dpt dra drd dre dri drp drr drt drx dta dtd dte dti dtp dtr dtt dtx dxd dxi dxp dxr dxt dxx eaa ead eae eai eap ear eat eax ed- eda edd ede edi edp edr edt edx eea eed eee eep eer eet eex eia eid eie eii eip eir eit eix ep- epa epd epe epi epp epr ept epx era erd ere eri erp err ert eta etd ete eti etp etr ett etx ex- exa exd exe exi exp exr ext exx i-d ia- iaa iad iae iai iap iar iat ida idd ide idi idp idr idt idx ie- iea ied iee iei iep ier iet iex iia iid iie iii iip iir iit iix ipa ipd ipe ipi ipp ipr ipt ipx ir- ira ird ire iri irp irr irt irx ita itd ite iti itp itt itx ixe ixi p-p paa pad pae pai pap par pat pax pda pdd pde pdi pdp pdr pdt pdx pea ped pee pei pep per pet pex pia pid pie pii pip pir pit pix ppa ppd ppe ppi ppp ppr ppt ppx pra prd pre pri prp prr prt prx pt- pta ptd pte pti ptp ptr ptt ptx pxe pxr pxt ra- raa rad rae rai rap rar rat rax rda rdd rde rdi rdp rdr rdt rdx re- rea red ree rei rep rer ret rex ria rid rie rii rip rir rit rix rpa rpd rpe rpi rpp rpr rpt rpx rra rrd rri rrp rrr rrt rta rtd rte rti rtp rtr rtt rtx rxp rxr t-x taa tad tae tai tap tar tat tax tda tdd tde tdi tdp tdr tdt tdx te- tea ted tee tei tep ter tet tex tia tid tie tii tip tir tit tix tpa tpd tpe tpi tpp tpr tpt tpx tra trd tre tri trp trr trt trx tta ttd tte tti ttp ttr ttt ttx txe txi txt xaa xad xap xar xat xda xde xdi xdr xdt xed xee xep xer xet xex xia xie xii xit xix xpa xpd xpe xpp xpt xrd xrt xrx xti xtp xtr xtx xxi xxp xxx