B3313221211233132322331321123233313231333132233133313331333131121133112121   >>    B331322121123313232233132112323331323133313223313331333133313112113311212   <<    B3313221211233132322331321123233313231333132233133313331333131121133112123   >>      B3313221211233132322331321123233313231333132233133313331333131121133112122   >>