B3313221211233132322331321123233313231333132233133313331323223313232223131221   >>    B331322121123313232233132112323331323133313223313331333132322331323222313122   <<    B3313221211233132322331321123233313231333132233133313331323223313232223131223   >>      B3313221211233132322331321123233313231333132233133313331323223313232223131222   >>