Using the interquark potential due to Bhaduri et al., the properties o
f q2q2BAR systems are studied within a non-relativistic quark model. A
systematics over the various flavors u, d, s, c, b, over the total sp
in S and over the orbital angular momentum L = 0, 1, 2, 3 is carried o
ut, while the parity is taken as the natural one. Not only the spectru
m, but also the decay properties of each state are evaluated and the w
ave functions are analyzed in term of dumbbell structure. We propose a
number of new resonances which could have a very narrow width.