f{char}	To [count]'th occurrence of char to the right.
1 find char c (f)
2 find char c with count (2f)
3 find char c using repeat and count (2;)
4 find char c in reverse direction with count ($3,)
5 find consecutive char ### with count (2f#)
6 find consecutive char ### using repeat (;;)
7 find consecutive char ### using repeat and count (2;)
8 find consecutive char ### in reverse direction with count ($2,)
9 delete # found (d;)
10 delete not found (d;)
11 delete invalid count # (d2;)
12 find unicode æ
13 find space
14 find tab