accoding to the ETSI EN 300 744

"In the 2K mode, interleaved vectors shall be mapped onto four consecutive
OFDM symbols. For even interleaved vectors these shall start with symbols
0,8,16,24, etc. and for odd interleaved vectors these shall start with
symbols 4,12,20,28, etc. in every super-frame."

I have an question about symbol index of 2K mode & in-depth mode.

1. 4 consecutive OFDM symbols index: 0~67,0~67,0~67,0~67.
2. 4 consecutive OFDM symbols index: 0~271.

As you know, each index generate different ouput. which one is right?