B3313221211233132322331321123233313231333132233133313331333131121211111223231   >>    B331322121123313232233132112323331323133313223313331333133313112121111122323   <<    B3313221211233132322331321123233313231333132233133313331333131121211111223233   >>      B3313221211233132322331321123233313231333132233133313331333131121211111223232   >>