is also spoken in isolated communities within the provinces of Bataan ( Abucay , Dinalupihan , Hermosa , and Samal ), Bulacan Baliwag, Bulacan ( San Miguel , San Ildefonso , Hagonoy , Plaridel , Pulilan , and Calumpit ), Nueva Ecija ( Cabiao , San Isidro , Gapan City and Cabanatuan