C21111113313132322331323331323113313233313231122112323133313231323211121   >>    C2111111331313232233132333132311331323331323112211232313331323132321112   <<    C21111113313132322331323331323113313233313231122112323133313231323211123   >>      C21111113313132322331323331323113313233313231122112323133313231323211122   >>