output CONTROLLING about more timer relais

i have problem but i can't find solution. My problem is:

i have a button I9 , if i push the button I will make Output Q8 for 7 sec. activ. ( Q8=1 for 7 sec.) than start next timer for 1min. after this I will make for 7 sec. the Q9 activ. Start next timer for 1 min. this make after 1 min. Q8 for 7 sec. Activ. start next timer for 20min. this make after 20 min. the Q9 for 7 sec. activ.

any help wellcome

thanks in advance and sorrz for my English-