1. In the Beginning of the Sentence. Example :
a. After trying multiple times, Tanveer finally cleared the equation.
b. Before we start class, I would like to talk to you about something.
2. In the Middle of the Sentence. Example :
a. The girl in the second row is the one who has recently joined.
b. The cafe on the fourth street has really good muffins.
3. In the End of the Sentence. Example :
a. The box was kept under the table.
b. We were planning to order food during the break.