________________________________________________________________________
___________________________________zz___________________________________
____________________________________z___________________________________
_____z_____________________z________z______________z____________________
_____z_____________________z_______z_______________z____________________
_________________________zzzzz__________________________________________
____zz____zzzz_____________z______________zzzz____zz____zzz_zz____zzzz__
_____z___z____z____________z_____________z____z____z____z__z__z__z____z_
_____z___z____z____________z________________zzz____z____z__z__z__z____z_
_____z___zzzzzz____________z______________zz__z____z____z__z__z__zzzzzz_
_____z___z_________________z_____________z____z____z____z__z__z__z______
_____z___z_________________z__z__________z___zz____z____z__z__z__z______
_____z____zzzz______________zz____________zzz_z__zzzzz__z__z__z___zzzz__
_____z__________________________________________________________________
_z__z___________________________________________________________________
__zz____________________________________________________________________
