B3313221211233132322331321123233313231333132233133313331323223313112112321   >>    B331322121123313232233132112323331323133313223313331333132322331311211232   <<    B3313221211233132322331321123233313231333132233133313331323223313112112323   >>      B3313221211233132322331321123233313231333132233133313331323223313112112322   >>