we are in Fat(3-3-5),wave C of Fat is a Ending diagonal.

Flat (regular, expanded, running)

A Flat is a three-wave pattern labeled A-B-C that generally moves sideways. It is corrective, counter-trend and is a very common Elliott pattern.

Expanded flat

• structure is 3-3-5
• wave B moves beyond the start of wave A
• wave C ends more substantially beyond the ending level of wave A
• appears in wave two or four in an impulse, wave B in an A-B-C, wave X in a double or triple zig-zag, or wave Y in a triple threes

Ending diagonal

An ending diagonal is a special type of pattern that occurs at times when the preceding move has gone too far too fast, as Elliott put it. A very small percentage of ending diagonals appear in the C wave position of A-B- C formations. In double or triple threes, they appear only as the final "C" wave. In all cases, they are found at the termination points of larger patterns, indicating exhaustion of the larger movement.

• structure is 3-3-3-3-3
• a wedge shape within two converging lines
• wave 4 must trade into a territory of a wave 1
• appears primarily in the fifth wave position, in the C wave position of A-B- C and in double or triple threes as the final "C" wave

The above content quoted from "ew-forecast.com", all peer originator!!!