B331322121123313232233132112323331323133313223313331333132322331323211311   >>    B33132212112331323223313211232333132313331322331333133313232233132321131   <<    B331322121123313232233132112323331323133313223313331333132322331323211313   >>      B331322121123313232233132112323331323133313223313331333132322331323211312   >>