Be careful not to convert the subtonic into a tonic.
"The Ontario Readers: The High School Reader, 1886"
Ministry of Education
Some syllables that so end, by virtue of tonic or subtonic elements which they may contain, are capable of some prolongation; for example, warp, dart, block, grab, dread, grog.
"The Ontario Readers: The High School Reader, 1886"
Ministry of Education
Indefinite Syllables are capable of almost indefinite prolongation; they are those which terminate in a tonic, or any subtonic except one of the three abrupt subtonics, b, d, g; for example, awe, fudge, hail, arm.
"The Ontario Readers: The High School Reader, 1886"
Ministry of Education