Password with known rules

Hi,

I'm hoping someone might be able to help me. The scenario is that I am trying to crack a password of 8 characters in length. I know that the password consists of 7 lower case letters and one number, though I don't know the order.

My question is this: is there a way to run OCLHashCat in such a way that it will run with these rules in place, but try all possible positions for the number? At present the only way I can think to do it is by running the program up to 8 times with different masks, i.e:

?l?l?l?l?l?l?l?d
?l?l?l?l?l?l?d?l
?l?l?l?l?l?d?l?l
etc.

Thanks in advance!