strengthen -4599 {strengthen},

strengthen -4741 establish, established, stablish, {strengthen},

strengthened -1412 {strengthened},

strengthened -1743 enabled, increased, made, strength, 
{strengthened}, strengtheneth, strong,

strengthened -1765 {strengthened},

strengthened -2901 {strengthened}, strong,

strengtheneth -1743 enabled, increased, made, strength, 
strengthened, {strengtheneth}, strong,

strengthening -1991 confirmed, confirming, {strengthening},