bbbb bbdd bbeb bdii bebb bebe bebi bede bedi beeb beed beeg begg begi bibb bibe bibi bide bidi bieb bied bigb bigd bige bigg dddd ddie debe debi dedd dede dedi deeb deed deeg dege degi deid deie dgeg dgge dibb dibe dide didi dieb died dige digg digi diii ebed ebid edde eddi ede- edei edge edie eede eeee egbe egee eggb egge eggi eid- eide eidi eied eiei eige eigg gbde gddb gebe gebi gedd gede gedi geed gege gegg geie geig gggg gibb gibe gidd gide gidi gied gige gigg gigi i-be ibed ibeg ibge ibid ibie idbe ided idee idid idie idig ieie iide iied iiie iiii