B3313221211233132322331321123233313231333132233133313331333132333132313211211   >>    B331322121123313232233132112323331323133313223313331333133313233313231321121   <<    B3313221211233132322331321123233313231333132233133313331333132333132313211213   >>      B3313221211233132322331321123233313231333132233133313331333132333132313211212   >>