Table I.

Sequences of administered study treatment (T) for each subject.

Visit	Subject
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1	T1	T1	T1	T2	T2	T2	T2	T3	T3	T3	T3	T4	T4	T4	T4
2	T2	T3	T4	T1	T1	T3	T4	T1	T1	T2	T2	T2	T2	T3	T3
3	T3	T4	T3	T3	T4	T1	T3	T2	T4	T1	T4	T1	T3	T1	T2
4	T4	T2	T2	T4	T3	T4	T1	T4	T2	T4	T1	T3	T1	T2	T1