-ic bbb bbc bbe bbg bbi bbo bcb bcc bce bcg bci bco bcv be- beb bec bee beg bei beo bev bgb bgc bge bgg bgi bgo bgv bi- bib bic bie big bii bio biv bob boc boe bog boi boo bov bvb bvc bve bvg bvi bvo bvv c-- cbb cbc cbe cbg cbi cbo cbv ccb ccc cce ccg cci cco ccv ce- ceb cec cee ceg cei ceo cev cgb cgc cge cgg cgi cgo cgv ci- cib cic cie cig cii cio civ co- cob coc coe cog coi coo cov cvb cvc cve cvg cvi cvo cvv ebb ebc ebe ebg ebi ebo ebv ec- ecb ecc ece ecg eci eco ecv eeb eec eee eeg eeo eev egb egc ege egg egi ego eib eic eie eig eii eio eiv eo- eob eoc eoe eog eoi eoo evb evc eve evg evi evo evv gbc gbe gbg gbi gbo gbv gcb gcc gce gcg gci gco ge- geb gec gee geg gei geo gev ggb ggc ggg ggi ggo ggv gib gic gie gig gii gio giv gob goc goe gog goi goo gov gvb gvc gve gvg gvi gvo i-v ibb ibc ibe ibg ibi ibo ibv icb icc ice icg ici ico icv ie- iec iee ieg iei iev igb igc ige igg igi igo iib iic iie iii iio io- iob ioc ioe iog ioi ioo iov ivb ivc ive ivg ivi ivo ivv o-i ob- obb obc obe obg obi obo obv oc- ocb occ ocg oci oco ocv oeb oec oee oeg oei oeo ogc oge ogg ogi ogo oib oic oie oii oio oiv oo- oob ooc oog ooi ooo oov ov- ovb ovc ove ovi ovo ovv v-e vbc vbg vbi vbo vbv vcc vce vci vco veb vec vee veg vei veo vgc vgg vgo vi- vib vic vie vig vii vio viv vob voc voe vog voi voo vov vvb vvc vvg vvi vvo vvv