On the Subject of Keypad Masked

These stickers sure have seen better days.

Each symbol on the module is made by overlaying two of the symbols from the chart below and taking the points where they overlap. Each Keypad Masked module uses eight unique symbols.

The chart is a 3×3×3 cube. Press the keys in order of the midpoints of their pairs of symbols in reading order. If two keys have the same midpoint, they are ordered by which key has one of its symbols appear first in reading order.