Problems with itunes password

Hello,
i'm having problems with getting my password for itunes backup 11.*.

I know that my passwords starts and ends with ., and know which words did i probably put in. Is there a way that i put these words in some file, and hashcat combine them and tries to find password? i dont know how long this password is..

I tried running hashcat with 14800 but i think it wouldnt be finish..