brett5{a double-diamond-brett


a=  b=  c=  d=  
a+  b+  c+  d+  
a?  b?  c?  d?  e?  
a/  b/  c/  d/  e/  f/  g/
        c:  d:  e:  f:  g:
            d;  e;  f;  g;
            d,  e,  f,  g,