Swarup - 16(4) is only that you may a percentage of reservation, it is trying to find a route...

CJI: the constitution has used 3 expressions, backward class , SC/SCT and SEBC - backward class will include SC/ST perhaps the SC/ST as a grouping cannot fall under SEBCs, they are very distinct ... therefore when the state is exercising power under 342A (3) they cannot excludes SC/ST or a part thereof because 15(4) clearly specifies SC/ST as a distinct denomination from SEBC . 16(4) makes that very clear... because SC/ST are deemed to be part of SEBC there is no need for them to be a part of 15(4), 16(4) is much broader.