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 measured by different standards” (Eichler 1980:15). A gender based double standard is considered a same behavior exhibited by a man or woman which is evaluated differently. Types of these judgements include sexual behaviors such as premarital-sex, in which there is a need to protect a daughter’s sexual purity and not the son’s. Other behaviors sometimes judged differently for each gender include dating, cohabitation, age of marriage, extramarital sex, sexual assault, sexual harassment, domestic violence, hypergamy, bigamy, remarriage, and remaining single. A double standard can develop in a person’s mind for a multitude of reasons including; finding an excuse for oneself,