I tried a few different formations over the season and it does seem that Liverpool respond best to a 4-2-3-1 system. I experimented with a 4-2-2-2 and a 4-3-3 but I struggled to incorporate all of the Reds' attacking options. I believe that if you play Emre Can and Jordan Henderon in the middle of midfield with Daniel Sturridge and Philippe Coutinho on the flanks (acting as inside forwards) accompanied by Roberto Firmino (or Hachim Mastour) as a number ten and Christian Benteke up front you should find a winning formula eventually.