13
*abr*aka*dabra*bark*baba*a*a*a*a*a
*bababr*aka*dabra*bark*a
*baba*abr*aka*dabra*bark*a
*abr*aka*dabra*baba*bark*a*a*a*a
*abr*aka*dabra*baba*a*a*bark*a*a
*abr*aka*dabra*babark*a*a*a*a*a
*abr*aka*baba*dabra*bark*a*a
*abr*aka*dabra*baba*a*bark*a*a*a
*abr*baba*aka*dabra*bark*a
*abr*aka*baba*dabra*a*bark*a
*abr*aka*baba*a*dabra*bark*a
*abr*aka*dabra*baba*a*a*a*bark*a
*abr*babaka*dabra*bark*a