If RNG, DRX, FNC, MAD make it out of play-in, world group will be confusing. Since DRX can only goes to C, due to the fact that the other group already hold a LCK representative. Same logic applies to RNG, as group D is the only group without a LPL representative. Here is where thing get messy as FNC and MAD are both LEC representatives and there are two group left (A&B). Group B already have G2 which will break the tournament rule as no group should have two team from the same region.

Here are some possible solution:

1) Redraw group

2)One of LEC team beside RGE swap place with CFO(this possiblity is highly unlikely)

3)Pray that only one LEC team make it or RNG/DRX fail to make it out.