Before revision:  We show that there exists a minimal subshift X_0 of \Omega_0 such that any tiling in X_0 can be decomposed uniquely into 19 distinct patches of sizes ranging from 45 to 112 that are equivalent to a set of  self-similar and aperiodic 19 Wang tiles.
After revision:  We show that there exists a minimal subshift X_0 of \Omega_0 such that every tiling in X_0 can be decomposed uniquely into 19 distinct patches of sizes ranging from 45 to 112 that are equivalent to a set of self-similar and aperiodic 19 Wang tiles.