Say Alice signs and broadcasts a tx with input Ai, with SIGHASH_SINGLE to Ao and SIGHASH_ANYONECANPAY Bob signs and broadcasts a tx with input Bi, with SIGHASH_SINGLE to Bo and SIGHASH_ANYONECANPAY
Can Carol complete the tx so that it is valid to be published in the chain? It only has to make Ai + Bi + Ci + F = Ao + Bo + Co but it all must be contained in a single transaction.