1) Con 323+ (Lab 227-) seats - Simple Conservative government
2) Con between 310 and 322 seats (Lab 240-228) - Coalition continues.
If you add the right bloc to 310 you get 323. In this case the Conservatives could shun the LibDems, but I suspect they will prefer to continue to work with the LibDems than having to rely on the right bloc, and the LibDems would find the attractions of continuing in government too strong to say no.
3) Con between 286 and 309 seats (Lab 264-241) - LibDems decide.
In this situation the LibDems have indicated they would talk to the Conservatives first, but in principle they could go either way: see below.
4) Lab between 265 and 298 (Con 285-252) - Labour SNP understanding.
265 plus the left bloc of 58 gets to 323. Would the LibDems get a look in? There is a possibility near the Lab 265 mark, where Labour might want to avoid the chance of one of the smaller left block parties causing difficulties. But it is not clear why Labour would want a coalition with the LibDems in this case, rather than something similar to their SNP understanding.
5) Labour between 299 and 322 (Con 251-228) - Labour choice
Labour would still have the option of an SNP arrangement, but it could alternatively form a coalition, or make an arrangement, with the LibDems. Some suspect Labour would find the politics of not being dependent on the SNP attractive, but they would probably want a new LibDem leader in exchange.
6) Lab 323+ seats - Simple Labour government.