Dominoes spots from one to six are generally arranged as they are on six-sided dice, but because blank ends having no spots are used, seven faces are possible, allowing 28 unique pieces in a double-six set. However, this is a relatively small number especially when playing with more than four people, so many domino sets are "extended" by introducing ends with greater numbers of spots, which increases the number of unique combinations of ends and thus of pieces. Each progressively larger set increases the maximum number of pips on an end by three, so the common extended sets are double-nine, double-12,
Double standard A policy of double standards is a situation when the assessment of the same phenomenon, process or event in the international relations depends on character of the relations of the estimating parties with assessment objects. At identical intrinsic filling of action of one country get support and a justification, and other – is condemned and punished. The following phrase became an example of policy of double standards: "One man's terrorist is another man's freedom fighter", entered into use by the British writer Gerald Seymour in his work "Harry's Game" in 1975. Double standard A double standard is the application of