b-p bbb bbi bbn bbo bbp bbr bi- bib bii bin bio bip bir biv bnb bni bnn bno bnp bnr bnv bob boi bon boo bop bor bov bpb bpi bpn bpo bpp bpr bpv brb bri brn bro brp brr brv bvb bvi bvn bvo bvp bvr bvv i-v ibb ibi ibn ibo ibp ibr ibv iib iii iin iio iip iir in- inb ini inn ino inp inr inv io- iob ioi ion ioo iop ior iov ipb ipi ipn ipo ipp ipr ipv ir- irb iri irn iro irp irr irv ivb ivi ivo ivp ivr ivv n-i nbb nbi nbn nbo nbp nbr nbv nib nii nin nio nip nir niv nnb nni nnn nno nnp nnv no- nob noi non noo nop nor nov npb npi npn npo npp npr npv nrb nri nrn nro nrp nrr nrv nvb nvi nvn nvp nvv o-i ob- obb obi obn obo obp obr obv oib oii oin oio oip oir oiv on- onb oni onn ono onp onr oo- oob ooi oon ooo oop oor oov op- opb opi opn opo opp opr opv or- orb ori orn oro orp orr orv ov- ovb ovi ovo ovp ovv p-p pbb pbi pbn pbo pbp pbr pib pii pin pio pip pir piv pn- pnb pni pnn pno pnp pnr pnv pob poi pon poo pop por pov ppb ppi ppn ppo ppp ppr ppv prb pri prn pro prp prr prv pvb pvi pvn pvo pvp pvr pvv rbb rbi rbn rbo rbp rbr rib rii rin rio rip rir riv rnb rni rnn rno rnp rnr rnv rob roi ron roo rop ror rov rpb rpi rpn rpo rpp rpr rpv rrb rri rrn rrp rrr rvb rvi rvn rvo rvp rvr rvv vbi vbo vbr vbv vi- vib vii vin vio vip vir viv vn- vni vno vnp vnr vnv vob voi von voo vop vor vov vpb vpi vpn vpo vpp vpr vrb vri vrn vrp vrr vvb vvi vvo vvr vvv