B33132212112331323223313211232333132313331322331333133313331323133112312121   >>    B3313221211233132322331321123233313231333132233133313331333132313311231212   <<    B33132212112331323223313211232333132313331322331333133313331323133112312123   >>      B33132212112331323223313211232333132313331322331333133313331323133112312122   >>