-er b-u bbb bbe bbf bbg bbi bbr bbu be- beb bee bef beg bei ber beu bev bfb bfe bff bfg bfi bfr bfu bfv bgb bge bgf bgg bgi bgr bgu bgv bi- bib bie bif big bii bir biu biv brb bre brf brg bri brr bru brv bub bue buf bug bui bur buu bvb bve bvg bvi bvr bvu bvv ebb ebe ebf ebg ebi ebr ebu ebv eeb eee eef eeg eer eev ef- efb efe eff efg efi efr egb ege egf egg egi egr egu eib eie eif eig eii eir eiu eiv erb ere erf erg eri err eru erv eu- eub eue euf eug eui eur euv evb eve evf evg evi evr evv fbb fbe fbf fbg fbi fbr fbu feb fee fef feg fei fer feu fev ffe fff ffg ffi ffr ffu ffv fgb fge fgf fgg fgi fgr fgv fib fie fif fig fii fir fiu frb fre frf frg fri frr fru fub fue fuf fug fui fur fuu fuv fvg gbe gbf gbg gbi gbr gbu gbv ge- geb gee gef geg gei ger geu gev gfb gfe gff gfi gfr ggb ggg ggi ggr ggu ggv gib gie gif gig gii gir giu giv grb gre grf grg gri grr gru grv gu- gub gue guf gug gui gur guu guv gvb gve gvf gvg gvi gvr gvu i-f i-v ibb ibe ibf ibg ibi ibr ibu ibv ie- iee ief ieg iei ier iev ifb ife iff ifg ifi ifr ifu igb ige igf igg igi igr igu iib iie iif iii iir iiu ir- irb ire irf irg iri irr iru irv iu- iub iue iug iui iur ivb ive ivf ivg ivi ivr ivu ivv rbb rbe rbf rbg rbi rbr rbu re- reb ree ref reg rei rer reu rev rfb rfe rff rfg rfi rfr rfu rfv rgb rge rgf rgg rgi rgr rgv rib rie rif rig rii rir riv rrb rrf rrg rri rrr rru rub rue ruf rug rui rur ruu ruv rvb rve rvf rvg rvi rvr rvu rvv ubb ube ubf ubg ubi ubr ubu ubv ueb uee uef ueg uei uer ufe uff ufg ufi ufr ufu ufv ugb uge ugf ugg ugi ugr ugu uib uie uif uig uii uir uiu ur- urb ure urf urg uri urr uru uue uug uur uuu uvb uve uvf uvu uvv v-e vbg vbi vbr vbv veb vee vef veg vei ver veu vfb vff vfg vfi vfr vfu vfv vgf vgg vgr vgu vi- vib vie vif vig vii vir viu viv vrb vre vrf vrg vri vrr vru vue vug vur vuv vvb vvg vvi vvr vvv