How to crochet a corner to corner treble square

As seen on https://www.facebook.com/TutorialCrochet?fref=ts

N.B. This square is worked back and forth around two sides starting from the bottom left corner.
Tip: tweak the square into shape every couple of rows and try not to work too tightly especially at the beginning.

Abbreviations:
Ch=chain
ss=slip stitch
sk=skip
tr=treble

To begin: Work 4ch and join with a ss to form a ring

Row 1: 3ch, [2tr, ch2, 3tr] into the ring, turn.
Row 2: 3ch (counts as tr here and throughout), sk first tr, 1tr into each of the next 2tr, [2tr, 2ch, 2tr] into 2ch space (corner made), 1tr into each of the next 2tr, 1tr into 3rd of 3ch, turn.
Row 3: 3ch, sk 1tr, 1tr into each of the next 4tr, [2tr, 2ch, 2tr] into 2ch space (corner made), 1tr into each of the next 4tr, 1tr into 3rd of 3ch, turn.
Row 4: 3ch, sk 1tr, 1tr into each of the next 6tr, [2tr, 2ch, 2tr] into 2ch space (corner made), 1tr into next 6tr, 1tr into 3rd of 3ch, turn.

Continuing to grow the corner to corner square in this way, working increasing number of trebles along two sides and [2tr, 2ch, 2tr] into the corner until it reaches the desired size.


Happy crocheting!