 PRINT_COMPLETE_CONFIGURATION. U prints the next complete configuration and erases all marks u, v, w, x, y. It then returns to FIND_NEXT_STATE. U first searches for the rightmost letter u, to check which move is needed (R, L, N) and erases the mark u for R, L, N. Depending on the value L, R or N will then write down the next complete configuration by applying COPY\(_5\) to u, v, w, x, y. The move operation (L, R, N) is accounted for by the particular combination of u, v, w, x, y: 