8  1 this, 2 is, 3 a, 4 test, 5 of, 6 splitting, 7 a, 8 phrase
for i in tt --->
    4  4 test
    5  5 of
    6  6 splitting
    7  7 a
    8  8 phrase
    1  1 this
    2  2 is
    3  3 a
for (i=1 ... 
    1  1 this
    2  2 is
    3  3 a
    4  4 test
    5  5 of
    6  6 splitting
    7  7 a
    8  8 phrase