B3313221211233132322331321123233313231333132233133313331323131232313121   >>    B331322121123313232233132112323331323133313223313331333132313123231312   <<    B3313221211233132322331321123233313231333132233133313331323131232313123   >>      B3313221211233132322331321123233313231333132233133313331323131232313122   >>