B3313221211233132322331321123233313231333132233133313331323223313112121121   >>    B331322121123313232233132112323331323133313223313331333132322331311212112   <<    B3313221211233132322331321123233313231333132233133313331323223313112121123   >>      B3313221211233132322331321123233313231333132233133313331323223313112121122   >>