B33132212112331323223313211232333132313331312111133132313211211   >>    B3313221211233132322331321123233313231333131211113313231321121   <<    B33132212112331323223313211232333132313331312111133132313211213   >>      B33132212112331323223313211232333132313331312111133132313211212   >>