-er -ic a-a a-c a-i aaa aac aae aag aai aao aar aav ac- aca acc ace acg aci aco acr acv aea aec aee aeg aei aeo aer aev ag- aga agc age agg agi ago agr agv ai- aia aic aie aig aii aio air aiv aoa aoc aoe aog aoi aoo aor aov ar- ara arc are arg ari aro arr arv av- ava avc ave avg avi avo avr c-- caa cac cae cag cai cao car cav cca ccc cce ccg cci cco ccr ccv ce- cea cec cee ceg cei ceo cer cev cga cgc cge cgg cgi cgo cgr cgv ci- cia cic cie cig cii cio cir civ co- coa coc coe cog coi coo cor cov cra crc cre crg cri cro crr crv cva cvc cve cvg cvi cvo cvr cvv eaa eac eae eag eai eao ear eav ec- eca ecc ece ecg eci eco ecr ecv eea eec eee eeg eeo eer eev ega egc ege egg egi ego egr eia eic eie eig eii eio eir eiv eo- eoa eoc eoe eog eoi eoo eor era erc ere erg eri ero err erv eva evc eve evg evi evo evr evv gaa gac gae gag gai gao gar gav gca gcc gce gcg gci gco gcr ge- gea gec gee geg gei geo ger gev gga ggc ggg ggi ggo ggr ggv gia gic gie gig gii gio gir giv goa goc goe gog goi goo gor gov gra grc gre grg gri gro grr grv gva gvc gve gvg gvi gvo gvr i-v ia- iaa iac iae iag iai iao iar iav ica icc ice icg ici ico icr icv ie- iea iec iee ieg iei ier iev iga igc ige igg igi igo igr iia iic iie iii iio iir io- ioa ioc ioe iog ioi ioo ior iov ir- ira irc ire irg iri iro irr irv iva ivc ive ivg ivi ivo ivr ivv o-i oaa oac oae oag oai oao oar oav oc- oca occ ocg oci oco ocr ocv oea oec oee oeg oei oeo oer oga ogc oge ogg ogi ogo oia oic oie oii oio oir oiv oo- ooa ooc oog ooi ooo oor oov or- ora orc ore org ori oro orr orv ov- ova ovc ove ovi ovo ovv ra- raa rac rae rag rai rao rar rav rca rcc rce rcg rci rco rcr rcv re- rea rec ree reg rei reo rer rev rga rgc rge rgg rgi rgo rgr rgv ria ric rie rig rii rio rir riv roa roc roe rog roi roo ror rov rra rrc rrg rri rrr rva rvc rve rvg rvi rvo rvr rvv v-a v-e vaa vac vae vag vai vao var vav vca vcc vce vci vco vcr vea vec vee veg vei veo ver vga vgc vgg vgo vgr vi- via vic vie vig vii vio vir viv voa voc voe vog voi voo vor vov vra vrc vre vrg vri vrr vva vvc vvg vvi vvo vvr vvv