▁they ▁are ▁also ▁important ▁for ▁the ▁mut ual ▁co operation ▁of ▁the ▁group ' s ▁members . ▁ ▁There ▁are ▁generally ▁three ▁social ▁classes ▁in ▁Bon tok ▁society , ▁the ▁k ak ach ang yan ▁( rich ), ▁the ▁w ad - ay ▁ng ach anna ▁( middle - class ), ▁and ▁the ▁la wa ▁( po or ). ▁ ▁The ▁rich ▁spons or ▁fe asts , ▁and ▁assist ▁those ▁in ▁dist ress , ▁as ▁a ▁demonstr ation ▁of ▁their ▁wealth . ▁ ▁The ▁poor ▁usually ▁work ▁as ▁share cro ppers ▁or ▁as ▁labor ers ▁for ▁the ▁rich . ▁ ▁Men ▁wear ▁g - strings ▁( wan es ) ▁and ▁a ▁r attan ▁cap ▁( su k long ). ▁Women ▁wear ▁sk ir ts ▁( t apis ). ▁ ▁Anth rop olog ists ▁believe ▁that ▁the ▁Bon tok ▁desc ended ▁from ▁Indones ian ▁and ▁Mal ay ▁imm igr ants , ▁however , ▁Bon to ks ▁believe ▁that ▁they ▁have ▁lived ▁in ▁their ▁present ▁area ▁since ▁time ▁imm em orial . ▁Today , ▁they ▁are ▁distributed ▁all ▁over ▁the ▁Philippines . ▁They ▁are ▁the ▁second ▁largest ▁group ▁in ▁the ▁Mountain ▁Province . ▁ ▁The ▁Bon tok ▁culture ▁hero ▁L um aw ig ▁instit uted ▁their ▁at or , ▁a ▁political ▁institution ▁identified ▁with ▁a ▁cer emon ial ▁place ▁ad orn ed ▁with ▁head h un ting ▁sk ull s . ▁ ▁L um aw ig ▁also ▁gave ▁the ▁Bon tok ▁their ▁ir rig ation ▁skills , ▁Tab o os , ▁rit uals ▁and ▁cer