Gram-Schmidt Process for Dependent Sets

Apply the Gram-Schmidt process in order to the vectors $v_1=(1,1,0)$, $v_2=(2,2,0)$, $v_3=(0,1,1)$ in $\mathbb R^3$, discarding any vector that comes out as zero. The nonzero outputs form an orthogonal basis of their span. What is the squared Euclidean norm of the last nonzero output vector?