([□] | □) □ □
([□=□] | □) □ □
([□ | □] | □) □ □
You should discover just one exception to this in your computer modeling exercise : the exception , for single gene traits , is heterosis . Proving a generalization to be false ( just one exception will do ) is easier than proving it to be true ( for all possible cases ) . By the time he 's through , he 's demonstrated that he 's that rare exception to the rule . There is just one exception when this may occur . Kerry 's statements and voting record show no signs of anti-Zionism , with just one exception known to me , his speech at the Council on Foreign Relations naming James Baker of all people as someone he might send to make peace between Israel and the Palestinians — a possibility he subsequently rejected . When implementing an exception or limitation for private copying in accordance with Article 5 ( 2 ) ( b ) , Member States should likewise promote the use of voluntary measures to accommodate achieving the objectives of such exception or limitation . But even the rule , if confined to South America , of trees flourishing only in a climate rendered humid by rain-bearing winds , has a strongly marked exception in the case of the Falkland Islands .