) ▁in ▁diameter . ▁ ▁The ▁inside ▁of ▁the ▁drum ▁is ▁car ved ▁in ▁the ▁shape ▁of ▁an ▁hour glass , ▁instead ▁of ▁a ▁cyl inder . ▁ ▁There ▁are ▁three ▁different ▁diam eters , ▁each ▁corresponding ▁to ▁a ▁distinct ▁" voice " ▁or ▁pattern . ▁The ▁different ▁diam eters ▁are ▁known ▁as : ▁ ▁Prima ▁- ▁The ▁smallest . ▁Also ▁called ▁h emb ra ▁( f em ale ) ▁or ▁quit im ba ▁or ▁qu ich im ba ▁( a ▁word ▁of ▁probable ▁African ▁origin , ▁but ▁whose ▁exact ▁meaning ▁has ▁been ▁lost ). ▁Cru za o ▁- ▁The ▁middle ▁diameter ▁drum . ▁The ▁name ▁means ▁" hy brid " ▁or ▁" cross ed ". ▁Pu ja o ▁- ▁The ▁largest ▁diameter . ▁Also ▁called ▁mach o ▁( male ). ▁The ▁word ▁pu ja o ▁is ▁a ▁vern ac ular ▁miss p elling ▁of ▁the ▁past ▁partici ple ▁of ▁the ▁verb ▁pu jar , ▁which ▁means ▁to ▁struggle , ▁to ▁push , ▁or ▁( col lo qu ial ly , ▁in ▁South ▁America ) ▁to ▁mo an ▁as ▁a ▁result ▁of ▁extreme ▁effort . ▁ ▁Play ing ▁technique ▁Red ondo ▁drums ▁are ▁held ▁between ▁the ▁player ' s ▁legs ▁and ▁played ▁with ▁a ▁stick ▁in ▁one ▁hand ▁and ▁the ▁fingers ▁of ▁the ▁other ▁( bare ) ▁hand . ▁There ▁are ▁six ▁basic ▁stro kes : ▁ ▁Open ▁stroke ▁with ▁bare ▁hand . ▁Cl osed ▁stroke ▁with ▁bare ▁hand ' s ▁f ing ert ips . ▁Bass ▁stroke ▁with ▁the ▁he el ▁of