P(a) = {.1} 
P(b|a) = {0, .1} 
P(c|a) = {0, .1} 
P(d|b) = {0, .1} 
P(e|b) = {0, .1} 
P(f|d) = {0, .1} 
P(g|d) = {0, .1} 
P(h|f) = {0, .1} 
P(i|f) = {0, .1} 
P(j|h) = {0, .1} 
P(k|h) = {0, .1}
