1lookup ChainedSingleSubst {
2    sub [one two] three A' by A.sc;
3    sub [B - D]' seven [eight nine] by [B.sc - D.sc];
4} ChainedSingleSubst;
5
6lookup ChainedMultipleSubst {
7    sub [A - C a - c] [D d] E c_t' V [W w] [X - Z x - z] by c t;
8} ChainedMultipleSubst;
9
10lookup ChainedAlternateSubst {
11    sub [space comma semicolon] e' from [e e.begin];
12} ChainedAlternateSubst;
13
14lookup ChainedLigatureSubst {
15    sub A [C c]' [T t]' Z by c_t;
16} ChainedLigatureSubst;
17
18lookup ChainedContextualSubst {
19    sub A D E c_t' lookup ChainedMultipleSubst V W X;
20} ChainedContextualSubst;
21
22feature test {
23    lookup ChainedSingleSubst;
24    lookup ChainedMultipleSubst;
25    lookup ChainedAlternateSubst;
26    lookup ChainedLigatureSubst;
27    lookup ChainedContextualSubst;
28} test;
29