C23131111222331311211331323111133132233132313331323331323223313231111231   >>    C2313111122233131121133132311113313223313231333132333132322331323111123   <<    C23131111222331311211331323111133132233132313331323331323223313231111233   >>      C23131111222331311211331323111133132233132313331323331323223313231111232   >>