Objects below match their "symbols" above, according to one "code" versus objects below match their "symbols" above, according to another "code."
Circle: VV; square: VΛ; triangle: ΛΛ ; blank: ΛV vs. circle: ΛΛ; square: ΛV; triangle: VV; blank: VΛ.
Circle: VV; square: V; triangle: ; blank: V vs. circle: ; square: =V; triangle: VV; blank: V.
Douglas R. Hofstadter