seepage /sˈiːpɪdʒ/ /sˈiːpɪdʒ/
leakage /lˈiːkɪdʒ/ /lˈiːkɪdʒ/
permeation /pˌɜːmɪˈeɪʃən/ /pˌɜːmɪˈeɪʃən/