15 by the time
16 during
17 as soon as
18 to
19 in order not to
20 in case
21 until
22 by
23 to
24 as
25 so as not to
26 before
27 so that
28 for
29 unless
30 providing(?)
15 by the time
16 during
17 as soon as
18 to
19 in order not to
20 in case
21 until
22 by
23 to
24 as
25 so as not to
26 before
27 so that
28 for
29 unless
30 providing(?)