This sentence tests type a: %%a%%.
This sentence tests type b: %%b%%.
This sentence tests type c: %%c%%.
This sentence uses types a, b, and c in reverse order: %%c%% %%b%% %%a%%.
This sentence uses a variable: %%?x%%
This sentence uses one variable once, then another twice: %%?x%% %%?y%% %%?y%%
This sentence uses four different variables: %%?w%% %%?x%% %%?y%% %%?z%%
This sentence uses four identical variables: %%?x%% %%?x%% %%?x%% %%?x%%
This sentence uses type c, then a variable: %%c%% %%?x%%
This sentence uses type c, then a variable named 'c': %%c%% %%?c%%
This sentence uses 10 identical variables: %%?x%% %%?x%% %%?x%% %%?x%% %%?x%% %%?x%% %%?x%% %%?x%% %%?x%% %%?x%%
This sentence uses either type a or b: %%a|b%%
This sentence uses a variable, then either type a or the same variable: %%?x%% %%a|?x%%
malformed sentence %%a||d%%