Help ID croc tooth from Kem Kem

[Le Quoc]

Hi everyone, I got these tooth from an auction. The only information I have that they are all from Kem Kem Basin and the number 1 as the seller description that Elosuchus sp. ~4cm but actually I'm not sure it label. 

So if anyone has any ideas of all of them that would be great. Thank for reading! 

 

[Troodon]

I think its difficult to identify small isolated Croc teeth because there are quite a few Crocodyliforms in the Kem Kem that have similar looking teeth.  Hamadasuchus and Elosuchus are your bigger Croc.

#4 could be Elosuchus