We'll search for every combination of “Eren” and your other names.
*ERE
E*REN
EE*REN
ER*REN
EE*EEN
E*RRN
EE*NNN
EE*ENN
E*NNN
ER*NNN
E*EEN
ER*EEN
ER*ENN
EE*ERN
E*RNN