B3313221211233132322331321123233313231333132233133313331333131312121   >>    B331322121123313232233132112323331323133313223313331333133313131212   <<    B3313221211233132322331321123233313231333132233133313331333131312123   >>      B3313221211233132322331321123233313231333132233133313331333131312122   >>