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At this age I will coo, then I will laugh and squeal, and then I will babble.
What are ages 2 months, 4 months, and 6 months.
Mnemonic: Coo at 2, L4UGH at 4, 6a66le at 6.
Bonus information: from birth-1 months "language" consists of alerting/startling to sound. 4 month olds will orient to voice.