Replicate 1 confounds AB, replicate 2 confounds BC

A $2^3$ design with 4 replicates is under consideration. Two of the replicates are shown below: Replicate 1: blocks $\{(1),c,ab,abc\}$ and $\{a,b,ac,bc\}$; Replicate 2: blocks $\{(1),a,bc,abc\}$ and $\{b,c,ab,ac\}$. Identify which of the treatment combinations are partially confounded in each replicate.