Resident neighbourhood (n)
		Purely non-mutualist	Mixed neighbourhood	Purely mutualist
Focal invader	Non-mutualist	$\frac{B_{AN}}{n+1}-c_r$	$\frac{B_{AN}}{n+1}-c_r$	$\frac{B_{AN}}{n+1}-c_r$
	Mutualist	$\frac{B_{AN}}{n+1}-c_r+B_{MN}-c_t$	$\frac{B_{AN}}{n+1}-c_r+\frac{B_{MN}}{xn+1}-c_t$	$\frac{B_{AN}}{n+1}-c_r+\frac{B_{MN}}{n+1}-c_t$