bbbb bbpr bbrg bibb bibi bigb bigg bipp birb birg biri birk birr bkpg bkpr brig brik brkb brrr gggg gibb gigg gigi gipi gipp girg giri girk girr gkrp gpgp gpip gprp grbr grib grig grip grrr ibri igri iiii ikig ikki ikri ipbk ipkg ippr ipri irbp iri- irig irip irki irri kbbb kbbg kbbi kbbk kbbr kbgb kbgg kbgr kbib kbig kbik kbkb kbkg kbkk kbkr kbpg kbpi kbpk kbpr kbrb kbrg kbri kbrk kgbb kgbr kggg kggi kggr kgir kgpg kgpr kgrb kgrg kgri kgrk kgrr kibb kibg kibi kibr kiii kiik kiip kiki kikk kikr kip- kipi kipp kipr kirb kiri kirk kirp kirr kkbb kkbg kkbi kkbr kkgb kkgr kkik kkkk kkpk kkrb kkrk kkrr kpbb kpbg kpbi kpbr kpgb kpgg kpgr kpir kpkk kpkr kppk kppp kppr kprb kprg kpri kprk kprp kprr krbb krbg krbi krbk krbr krgi krib krik krki krkk krkr krpi krpr krrb krrg krri krrk krrr pbpk pgib pibb pibi pigb pigg pigk pigp piip piki pikk pipi pipp pirg piri pirk pirr pkib pkig ppgi ppib ppig pppp pri- prig prii prri rbbb rbbr rgbi rib- rigg rigi riki rikk ripi ripp ripr riri rpii rrrr