BIVASCULAR

aa ab ai al ar as ba bi is la li si us

aal aas aba abs ail air ais ala alb als arb arc ars ava baa bal bar bas bis bra bur bus cab car cis cru cub cur lab lac lar las lav lib lis luv rai ras ria rib rub sab sac sal sau sib sic sir sri sub urb vac var vas vau via vis

aals abas abri ails airs alar alas alba albs arbs arcs aria aril asci aura baal baas bail bals bars bias birl blur bras bris bura burl burs cabs carb carl cars casa caul club crab crib cris crus cubs curb curl curs isba labs lacs laic lair lari lars lava lavs liar libs lira luvs raia rail rais rial rias ribs rubs sail sari saul scab scar sial slab slub slur suba sura ulva urbs uric ursa vacs vail vair vara vars vasa vaus vial virl visa