WTRV to RIME
RIME -> FOG
FOG <- BOYL (inverse reaction)
BOYL --> BOYL
Aw... I wanted to say, BOYL plus OXYG to WATR
Void to void (pushed by piston)
VOID -> NONE (eaten by SING)
Decaying sing to Hygn (fusion)
HYGN -> WATR (fuse some HYGN to OXYG, then burn it with the remaining HYGN.)