:`: a b `a `: c a c b `b `: c d `n c b `c `: c d c c b `d `: c d d c b `` `( `. `) `: c `$ `1 c a:"`: a b `a `: c a c b `b `: c d `n c b `c `: c d c c b `d `: c d d c b `` `( `. `) `: c `$ `1 c" b:"\n" c:"\"" d:"\\" `(.):"$1"
Note that non-ascii characters in the above source code will be escaped (such as \x9f).