bbb bbc bbe bbh bbo bcb bcc bce bch bco bcv be- beb bec bee beh beo bev bhb bhc bhe bhh bho bhv bob boc boe boh boo bov bvb bvc bve bvh bvo bvv c-- cbb cbc cbe cbh cbo cbv ccb ccc cce cch cco ccv ce- ceb cec cee ceh ceo cev ch- chb chc che chh cho chv co- cob coc coe coh coo cov cvb cvc cve cvh cvo cvv ebb ebc ebe ebh ebo ebv ec- ecb ecc ece ech eco ecv eeb eec eee eeo eev ehb ehc ehe ehh eho ehv eo- eob eoc eoe eoh eoo evb evc eve evh evo evv hbb hbc hbe hbh hbo hbv hcb hcc hce hch hco hcv he- heb hec hee heh heo hev hhb hhc hhe hhh hho hhv hob hoc hoe hoh hoo hov hv- hvb hvc hvo hvv ob- obb obc obe obh obo obv oc- ocb occ och oco ocv oeb oec oee oeh oeo ohc ohe ohh oho oo- oob ooc ooh ooo oov ov- ovb ovc ove ovh ovo ovv v-e vbc vbh vbo vbv vcc vce vch vco veb vec vee veh veo vh- vhb vhc vhe vho vob voc voe voh voo vov vvb vvc vvo vvv