Era by Me

BTEAT

BTE

-X}1}1

-X

BC

AD

ACE/ATE

X{ATE{1}

B(X)1

B++++{X{X{X}

EOT

TREEOT

ZETAETE

ZETAE{TREEOT{X}

EOFTT

TFY

TFTY

X_X

X{1_}ZETAE{TREEOT{X}

HFCTG

X_X of X BTE

X_X of X BC

X_X of X AD

X_X of Null

XX_XX

YCHFTT

TEOTAE