split ( ), '48 65 6c 6c 6f 2c 20 77 6f 72 6c 64 21'
split m( ), '48 65 6c 6c 6f 2c 20 77 6f 72 6c 64 21'
split qr( ), '48 65 6c 6c 6f 2c 20 77 6f 72 6c 64 21'