Idan ɓangaren tayin yana sama da spines, ana auna kuma an bayyana shi a matsayin ƙananan tashoshi, wanda ya kasance daga -1 zuwa -4 cm. Idan ɓangaren tayin yana ƙasa da spines na ischial, an bayyana nesa a matsayin ƙarin tashoshi (+1 zuwa +4 cm). A +3 da +4 ɓangaren tayin yana a perineum kuma ana iya gani. Shugaban tayin na iya canzawa na ɗan lokaci (ya zama ya fi tsayi) yayin da yake motsawa ta hanyar hanyar haihuwa. Wannan canji a cikin siffar shugaban tayin ana kiransa aiki mai mahimmanci kuma yana da mahimmanci a cikin mata na farko na aiki.
- 1 zuwa - 4 cm