-er eee eeo eer ees eew eie eii eio eir eis eo- eoe eoi eoo eor eos eow ere eri ero err ers erw es- ese esi eso esr ess esw ewe ewi ewo ewr ews eww ie- iee iei ier ies iie iii iio iir iis iiw io- ioe ioi ioo ior ios iow ir- ire iri iro irr irs is- ise isi iso isr iss isw iwe iwi iwo iwr iws iww o-i oee oei oeo oer oes oie oii oio oir ois oo- ooi ooo oor oos oow or- ore ori oro orr ors os- ose osi oso osr oss osw owe owi owo ows oww re- ree rei reo rer res rew rie rii rio rir ris roe roi roo ror ros row rri rrr rrs rse rsi rso rsr rss rsw rwe rwi rwr rws se- see sei seo ser ses sew sie sii sio sir sis siw soe soi soo sor sos sow sr- sre sri sro srr srs srw ss- sse ssi sso ssr sss ssw swe swi swo swr sws wee wei weo wer wes wew wie wii wir wis woe woi woo wor wos wow wr- wre wri wro wrr wrs wrw wse wsi wso wsr wss wsw wwe wwi wwo www